How do I find a power adapter for an old Hyundai laptop?
There are no markings on the laptop whatsoever other than the logo.

Size: ~13-3/4 by ~9-1/8, screen is ~12-1/8 by ~6-3/4 (~13-3/4 diagonal).
Shape: Wedge-like, thicker at the hinge, thinner at the front.
Branding: White molded "Hyundai" on the top case only.
Left Ports (hinge to front): Power, USB, HDMI (Power just says "DC").
Right Ports (hinge to front): USB, aux jack, microSD slot.
Hinge: Opens ~180 degrees, no ports on the hinge itself.
Trackpad: ~3.75" x 2", centered below the keyboard.
LEDs (above keyboard): 3 status (+, A, 1) and 2 microphone LEDs.
Bottom Vents (front corners): Two sets of 7 slots each (~1.25" x 0.375").
No ports on the front edge of the wedge which is about 1/4 inch thick.
Camera in center above screen. 10 screws hold the bottom plate on.

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Umberto wrote:

How do I find a power adapter for an old Hyundai laptop?
There are no markings on the laptop whatsoever other than the logo.

Size: ~13-3/4 by ~9-1/8, screen is ~12-1/8 by ~6-3/4 (~13-3/4 diagonal). Shape: Wedge-like, thicker at the hinge, thinner at the front.
Branding: White molded "Hyundai" on the top case only.
Left Ports (hinge to front): Power, USB, HDMI (Power just says "DC").
Right Ports (hinge to front): USB, aux jack, microSD slot.
Hinge: Opens ~180 degrees, no ports on the hinge itself.
Trackpad: ~3.75" x 2", centered below the keyboard.
LEDs (above keyboard): 3 status (+, A, 1) and 2 microphone LEDs.
Bottom Vents (front corners): Two sets of 7 slots each (~1.25" x 0.375").
No ports on the front edge of the wedge which is about 1/4 inch thick. Camera in center above screen. 10 screws hold the bottom plate on.

Google: Hyundai laptop power supply

12V, 2A

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On Thu, 5/1/2025 2:38 PM, Umberto wrote:

How do I find a power adapter for an old Hyundai laptop?
There are no markings on the laptop whatsoever other than the logo.

Size: ~13-3/4 by ~9-1/8, screen is ~12-1/8 by ~6-3/4 (~13-3/4 diagonal). Shape: Wedge-like, thicker at the hinge, thinner at the front.
Branding: White molded "Hyundai" on the top case only.
Left Ports (hinge to front): Power, USB, HDMI (Power just says "DC").
Right Ports (hinge to front): USB, aux jack, microSD slot.
Hinge: Opens ~180 degrees, no ports on the hinge itself.
Trackpad: ~3.75" x 2", centered below the keyboard.
LEDs (above keyboard): 3 status (+, A, 1) and 2 microphone LEDs.
Bottom Vents (front corners): Two sets of 7 slots each (~1.25" x 0.375").
No ports on the front edge of the wedge which is about 1/4 inch thick. Camera in center above screen. 10 screws hold the bottom plate on.

Hyundai did dabble in more expensive units in 2018. The power supply
on this, is pretty impressive.

https://www.tomshardware.com/reviews/hyundai-kanabo-15-laptop,5496.html

They have likely learned from this, that "price is everything" in computing.

This generation seems to have started in 2023 or so.

The new Celerons all work at 12V @ 2A.

https://hyundaitechnology.com/shop/category/computing-notebooks-2

Since your machine is on the order of 14 inch diagonal, I would have
to guess it is newer stock.

If the battery pack is removable, see if the battery pack
has a part number, then Google the battery pack part number,
and see which model(s) of laptop it supports. That could
narrow the number of potential models for you.

Paul

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: A noiseless patient Spider (3:633/280.2@fidonet)

Umberto wrote:

How do I find a power adapter for an old Hyundai laptop?
There are no markings on the laptop whatsoever other than the logo.

Size: ~13-3/4 by ~9-1/8, screen is ~12-1/8 by ~6-3/4 (~13-3/4 diagonal). Shape: Wedge-like, thicker at the hinge, thinner at the front.
Branding: White molded "Hyundai" on the top case only.
Left Ports (hinge to front): Power, USB, HDMI (Power just says "DC").
Right Ports (hinge to front): USB, aux jack, microSD slot.
Hinge: Opens ~180 degrees, no ports on the hinge itself.
Trackpad: ~3.75" x 2", centered below the keyboard.
LEDs (above keyboard): 3 status (+, A, 1) and 2 microphone LEDs.
Bottom Vents (front corners): Two sets of 7 slots each (~1.25" x 0.375").
No ports on the front edge of the wedge which is about 1/4 inch thick. Camera in center above screen. 10 screws hold the bottom plate on.

Looking for a power adapter(external to device) or battery(internal or externally installed on device)?

You've a few answers - one referencing a power supply, the other
referencing a battery pack.
=> Which one are you looking to find ???

--
....w¡ñ§±¤ñ

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In alt.comp.os.windows-10, on Thu, 1 May 2025 13:38:03 -0500, Umberto <canaliumberto@impresatrecolli.com> wrote:

How do I find a power adapter for an old Hyundai laptop?
There are no markings on the laptop whatsoever other than the logo.

Size: ~13-3/4 by ~9-1/8, screen is ~12-1/8 by ~6-3/4 (~13-3/4 diagonal). >Shape: Wedge-like, thicker at the hinge, thinner at the front.
Branding: White molded "Hyundai" on the top case only.
Left Ports (hinge to front): Power, USB, HDMI (Power just says "DC").
Right Ports (hinge to front): USB, aux jack, microSD slot.
Hinge: Opens ~180 degrees, no ports on the hinge itself.
Trackpad: ~3.75" x 2", centered below the keyboard.
LEDs (above keyboard): 3 status (+, A, 1) and 2 microphone LEDs.
Bottom Vents (front corners): Two sets of 7 slots each (~1.25" x 0.375").
No ports on the front edge of the wedge which is about 1/4 inch thick. >Camera in center above screen. 10 screws hold the bottom plate on.

MSinfo32 should give the manufacturer and model number.

--- MBSE BBS v1.1.1 (Linux-x86_64)
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On Fri, 5/2/2025 1:56 AM, micky wrote:

In alt.comp.os.windows-10, on Thu, 1 May 2025 13:38:03 -0500, Umberto <canaliumberto@impresatrecolli.com> wrote:

How do I find a power adapter for an old Hyundai laptop?
There are no markings on the laptop whatsoever other than the logo.

Size: ~13-3/4 by ~9-1/8, screen is ~12-1/8 by ~6-3/4 (~13-3/4 diagonal).
Shape: Wedge-like, thicker at the hinge, thinner at the front.
Branding: White molded "Hyundai" on the top case only.
Left Ports (hinge to front): Power, USB, HDMI (Power just says "DC").
Right Ports (hinge to front): USB, aux jack, microSD slot.
Hinge: Opens ~180 degrees, no ports on the hinge itself.
Trackpad: ~3.75" x 2", centered below the keyboard.
LEDs (above keyboard): 3 status (+, A, 1) and 2 microphone LEDs.
Bottom Vents (front corners): Two sets of 7 slots each (~1.25" x 0.375").
No ports on the front edge of the wedge which is about 1/4 inch thick.
Camera in center above screen. 10 screws hold the bottom plate on.

MSinfo32 should give the manufacturer and model number.

.... But the machine cannot run, until the OP obtains a
power source for it. That's why we cannot do any Captain Obvious
procedures in this case. dmidecode is one source of information,
even when the machine has no OS in it (and you are using a LiveCD
instead). But you need power, for any easy-to-do electronic procedures.

CPUZ has a DMI section in the text report save-able in the last tab.
The file is huge. This is just a tiny (edited) section of the file.
dmidecode may have originally been written at Intel, but I'm not
sure about that.

DMI
-------------------------------------------------------------------------

SMBIOS Version 2.8

DMI BIOS
vendor American Megatrends International LLC.

DMI System Information
manufacturer Micro-Star International Co. Ltd.
product MS-7C56

DMI Baseboard
vendor Micro-Star International Co. Ltd.
model MPG B550 GAMING PLUS (MS-7C56)

DMI System Enclosure
manufacturer Micro-Star International Co. Ltd.
chassis type Desktop

Most machines would have a plate on them somewhere, with some
details about the equipment. My Acer has a plate on the top surface,
which is a very useful place to put it. It allows the laptop
to sit on the computer table at my computer store, and customers
can see immediately what the model number is, write it down, and
go home and look up the particulars for it.

But some manufacturers are like PC-Chips, and they strip
all identifiers off the equipment. That's why, worst case,
and only with some luck, you might find a part number on
the battery pack, which can be correlated with the dimensions
of the thing to establish a model without using electronic identification.

You can always unsolder the BIOS chip and dump the DMI section manually.
It's just text after all, so a PROM programmer would make it accessible to you. (There are portable devices for SPI chips, which is another way to do it.
They have a clip that fits onto the chip.)

On a laptop, the DMI strings would be slightly different in nature, and
be more likely to have a model number for the laptop.

At my computer store, if the tech builds a desktop for you, one of his
build steps, is to reach into the DMI, and record the store name and particulars in the DMI. If you look in the DMI of my first PC computer,
you will find the name of the (now bankrupt) computer store that did
the build. They do the DMI, around the same time they glue that
tiny square computer store logo, to the computer case.

Paul

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: A noiseless patient Spider (3:633/280.2@fidonet)

Paul <nospam@needed.invalid> wrote:

On Thu, 5/1/2025 2:38 PM, Umberto wrote:

How do I find a power adapter for an old Hyundai laptop?
There are no markings on the laptop whatsoever other than the logo.

[...]

If the battery pack is removable, see if the battery pack
has a part number, then Google the battery pack part number,
and see which model(s) of laptop it supports. That could
narrow the number of potential models for you.

Not only look at the battery pack, but also look in the compartment
which holds the battery. Very likely, there are some (model/product
number) markings *in* that compartment.

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: NOYB (3:633/280.2@fidonet)

On Thu, 1 May 2025 20:33:44 -0500, Paul in Houston TX wrote:

Google: Hyundai laptop power supply

12V, 2A

That will only work if the company makes only one laptop power supply.
Does it?

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: To protect and to server (3:633/280.2@fidonet)

Randy Jones wrote:

On Thu, 1 May 2025 20:33:44 -0500, Paul in Houston TX wrote:

Google: Hyundai laptop power supply

12V, 2A

That will only work if the company makes only one laptop power supply.
Does it?

IDK. However, if you search the internet, including the Hyundai
website, you will only find the 12V, 2A or 3A models.

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: A noiseless patient Spider (3:633/280.2@fidonet)

On Sat, 3 May 2025 17:04:01 -0500, Paul in Houston TX wrote:

Google: Hyundai laptop power supply

12V, 2A

That will only work if the company makes only one laptop power supply.
Does it?

IDK. However, if you search the internet, including the Hyundai
website, you will only find the 12V, 2A or 3A models.

Isn't 12 volts far too low for any modern laptop power supply?
Aren't they usually around 20 volts?

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: A noiseless patient Spider (3:633/280.2@fidonet)

On Sat, 5/3/2025 6:43 PM, Ivano Rossi wrote:

On Sat, 3 May 2025 17:04:01 -0500, Paul in Houston TX wrote:

Google: Hyundai laptop power supply

12V, 2A

That will only work if the company makes only one laptop power supply.
Does it?

IDK. However, if you search the internet, including the Hyundai
website, you will only find the 12V, 2A or 3A models.

Isn't 12 volts far too low for any modern laptop power supply?
Aren't they usually around 20 volts?

They have to be high enough to charge the battery pack cheaply.
Like, with a buck converter.

A battery pack running between 14.4V and 16.8V, could likely
be charged from a 19V source. That might work.

A battery pack operating at 7.2V to 8.4V could be operated from a 12V source. You would just put more chains in parallel (like a 2S3P or
a 2S4P pack) to get more watt-hours to compensate for the lower
voltage. Equalizing the charge might be more of a problem.

A disadvantage of doing this, is the SMPS for VCore is likely
less efficient. A higher voltage would work a bit better.

I would guess the engineer looked at the BOM cost, and made
that the number one priority. The 12V 2A adapter is a common
item for external 3.5" HDD enclosures. They have a spec like that,
with an unstated spec of allowing a bit more current for a few
seconds, without the current limiter cutting out. The HDD
adapters aren't exactly 12V @ 2A, cutting out at 2.000 A. They
should be able to deliver a bit more current, on demand. This adapter
won't have an opportunity to demonstrate that, but the design
may just be a HDD wall adapter with a slightly different skin.

Paul

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Ivano Rossi wrote:

On Sat, 3 May 2025 17:04:01 -0500, Paul in Houston TX wrote:

Google: Hyundai laptop power supply

12V, 2A

That will only work if the company makes only one laptop power supply.
Does it?

IDK. However, if you search the internet, including the Hyundai
website, you will only find the 12V, 2A or 3A models.

Isn't 12 volts far too low for any modern laptop power supply?
Aren't they usually around 20 volts?

Internet search:

HYUNDAI BATTERY 7.4V 5000MAH 37WH E466113 HYBOOK HT14CCIC44EGP.

Specifications for HYUNDAI Thinnote-A 14.1" Laptop Celeron N3350 | 4GB |
64GB | Windows 10 Pro ; Camera, Front 2.0MP ; Battery, 7.4V, 5000mAh Lithium-ion Polymer.

Makes me wonder how long the laptop will run on battery.
Most of the internal stuff will use from 1v to approx 5v.
Note the WH on the first battery = 37 WH.
WH = IxE. Boost the E to 20V and it makes 100 WH.
Since most of the stuff runs at 1v to 5v, a 20v battery would give more
WH reserves... and make the LT heavier and bigger.


--- MBSE BBS v1.1.1 (Linux-x86_64)
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On Sun, 4 May 2025 00:43:41 +0200, Ivano Rossi wrote:

On Sat, 3 May 2025 17:04:01 -0500, Paul in Houston TX wrote:

Google: Hyundai laptop power supply

12V, 2A

That will only work if the company makes only one laptop power supply.
Does it?

IDK. However, if you search the internet, including the Hyundai
website, you will only find the 12V, 2A or 3A models.

Isn't 12 volts far too low for any modern laptop power supply?
Aren't they usually around 20 volts?

The only recent laptop I've had that used 12V was the Asus netbook.

--
Mark Lloyd
http://notstupid.us/

"Atheist: A person who believes in one less god than you do." [Rev.
Donald Morgan, Atheologist]

--- MBSE BBS v1.1.1 (Linux-x86_64)
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On Sun, 5/4/2025 2:14 PM, Mark Lloyd wrote:

On Sun, 4 May 2025 00:43:41 +0200, Ivano Rossi wrote:

On Sat, 3 May 2025 17:04:01 -0500, Paul in Houston TX wrote:

Google: Hyundai laptop power supply

12V, 2A

That will only work if the company makes only one laptop power supply. >>>> Does it?

IDK. However, if you search the internet, including the Hyundai
website, you will only find the 12V, 2A or 3A models.

Isn't 12 volts far too low for any modern laptop power supply?
Aren't they usually around 20 volts?

The only recent laptop I've had that used 12V was the Asus netbook.

You can do VCore power conversion, off the +5V rail.

I have an AthlonXP board (A7N8X), where there was no ATX12V connector,
and the current came in through the ATX 20 pin main connector. Cylindrical input inductor and three caps on the 5V side. Two iron core toriods on the output
side and five electrolytics. Four MOSFETs, a pair per phase, knuckle draggers with high gate capacitance. You don't run these on modern power supplies,
you go to the junk room and find one with a "strong" 5V output. While
gaming, the +5V consumption was high enough, it would cause most modern
PSU to shut off :-)

https://images.anandtech.com/reviews/motherboards/roundups/2002/Q4/nForce2/asus/board.jpg

Four wires on the 20 pin connector, carried the current (13 amps plus).
There was a Richtek 50KHz converter,
and there were some "beefy" MOSFETs on there. And somehow, there
was enough gate swing, to turn those MOSFETs fully on and fully off.
And that powered a 65W processor. Normally, an estimate of a "good"
power rating for a phase on VCore, is a target of 30-35 watts,
so from an estimation perspective, you would expect to find
two phases on such a design (for 65W).

The board designs switched to ATX12V right after that, and suddenly
RichTek wasn't the only game in town.

Most power converters (SMPS) have run at higher frequencies
than 50KHz. The record holder, is the Haswell FIVR inside the
CPU package, running its power converter at 200MHz. Nobody
else has some close to being that bold, since.

The designs today, are rather cheesy. There are some "favored" MOSFETs
for PC design. You use a shitload of those, for no particular reason.
Some of the designs run hot. On the Asus side, they did a multi-phase
design, where they had *three* banks in parallel. That's three phases
with exactly the same timing and firing point, and the currents from them
add. That wouldn't be necessary, if you spent a buck or two more
on a better MOSFET. But I have to admit, I'm impressed with the
temperature rise that gives. Lukewarm when flat out at 200 Watts.
There is as much heat coming from resistive loss in the PCB, as in the MOSFETs! There is likely more VCore ripple on those boards, but there is
no sign of instability that I can see.

For that board, an electrical type set up a go-fund-me, to buy a small multi-channel scope, so he could take pictures of the phase firing order,
and prove what they were doing :-) Which is also a cool aspect of our
current time. Donation-ware reverse engineering.

Paul

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On 04/05/2025 14:51, Paul wrote:

Aren't they usually around 20 volts?

The only recent laptop I've had that used 12V was the Asus netbook.

You can do VCore power conversion, off the +5V rail.

I am sorry for not responding sooner but I had to help someone who was
sick. Here are front and back pictures of the laptop in question. https://i.postimg.cc/rySRMrvs/hyundai-a.jpg https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg https://postimg.cc/delete/S3nngb1Z/c6d4e38d

The one thing that seems to be DIFFERENT from all photos of Hyundai laptops I've found in an images.google.com search is where the trackpad lines up.

Notice that the right edge of the trackpad lines up almost exactly between
the "Alt" and "Control" key (actually it hits the edge of the "Alt" key).

I just saw the recommendation to remove the case to read the battery.
I will do that next.

Thanks for your help in identifying what the charger is for this laptop.

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: To protect and to server (3:633/280.2@fidonet)

On 05/07/2025 1:35 AM, Umberto wrote:

On 04/05/2025 14:51, Paul wrote:

Aren't they usually around 20 volts?

The only recent laptop I've had that used 12V was the Asus netbook.

You can do VCore power conversion, off the +5V rail.

I am sorry for not responding sooner but I had to help someone who was
sick. Here are front and back pictures of the laptop in question. https://i.postimg.cc/rySRMrvs/hyundai-a.jpg https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg https://postimg.cc/delete/S3nngb1Z/c6d4e38d

The one thing that seems to be DIFFERENT from all photos of Hyundai laptops I've found in an images.google.com search is where the trackpad lines up.

Notice that the right edge of the trackpad lines up almost exactly between the "Alt" and "Control" key (actually it hits the edge of the "Alt" key).

I just saw the recommendation to remove the case to read the battery.
I will do that next.
Thanks for your help in identifying what the charger is for this laptop.

could you rig up a battery charger that sense the battery voltage, and provides that voltage. It would take the rigging up of they proper plug
size for the computer.

The idea is to give the battery enough charge that you could get into
the computer, and find some specifications.

Alternately google search the the location of the identification plate
for a Hyundai laptop. You may have to take the back cover off to find
some identification markings.

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: A noiseless patient Spider (3:633/280.2@fidonet)

On Wed, 5/7/2025 1:35 AM, Umberto wrote:

On 04/05/2025 14:51, Paul wrote:

Aren't they usually around 20 volts?

The only recent laptop I've had that used 12V was the Asus netbook.

You can do VCore power conversion, off the +5V rail.

I am sorry for not responding sooner but I had to help someone who was
sick. Here are front and back pictures of the laptop in question. https://i.postimg.cc/rySRMrvs/hyundai-a.jpg https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg https://postimg.cc/delete/S3nngb1Z/c6d4e38d

The one thing that seems to be DIFFERENT from all photos of Hyundai laptops I've found in an images.google.com search is where the trackpad lines up.

Notice that the right edge of the trackpad lines up almost exactly between the "Alt" and "Control" key (actually it hits the edge of the "Alt" key).

I just saw the recommendation to remove the case to read the battery.
I will do that next.
Thanks for your help in identifying what the charger is for this laptop.

My guess, is this is an ODM laptop, devoid of most markings.
With ODM, each model can be ordered from a different company.
The circuit board in one of the HyBooks is made by "Eii".
I don't think "renowned" is quite the name I would use.
The word "obscure" comes to mind. They also likely don't
do their own fabrication, so the PCB manufacturing plant is unknown.
This might be a "design house", and in the Chinese system, there
is plenty of matrix manufacturing capability.

"Established in 2013, Eii Technology is a renowned ODM (Original Design Manufacturer)
company located in the vibrant hub of Shenzhen's Qianhai bay. Our primary focus is
on the production and marketing of consumer electronics, encompassing notebook PCs,
All-in-One (AIO) computers, and tablet PCs. Our dedicated team of 120 professionals
operates from our Shenzhen headquarters, with 40% of them boasting over a
decade of R&D experience.

The pouch pack inside the laptop, is similarly untraceable.

It is not made by Hyundai and does not have a Hyundai part number.

This product is, unfortunately, a PCChips-like product. And really hard to identify.

Now, one of the Hybook, has white lettering on the bottom of the laptop. The lettering is in the center and up near the hinge end of the bottom of the unit. But because the letters are only silk screened on, if the laptop
sits on the users lap, it's easy to wear the lettering off. And
that may have been the only laptop identifier, is some white text on the bottom.

The circuit board has a date on it, this one is the year 2020 for example.
But to gain access to it, requires removal of the heat spreader plate. And
that means fitting it and putting the thermal paste back later.

https://www.youtube.com/watch?v=SwLUF1XbTjE

The whole job is not an easy task -- unless the white lettering is
still visible on the bottom.

Sorry,
Paul



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* Origin: A noiseless patient Spider (3:633/280.2@fidonet)

On Wed, 7 May 2025 15:16:17 -0400, Paul wrote:

The whole job is not an easy task -- unless the white lettering is
still visible on the bottom.

Thanks for looking at it where you noticed there's NOTHING by way of description other than the one brand name on the outside top cover.

I made a small mistake in the links to the pictures which I fixed below. https://i.postimg.cc/rySRMrvs/hyundai-a.jpg https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg https://i.postimg.cc/j27y7YjV/hyundai-e.jpg https://i.postimg.cc/4Ng4zRLJ/hyundai-f.jpg

This is a google search for images of a similar 14-inch Hyundai laptop. https://www.google.com/search?tbm=isch&q=hyundai+14+laptop

Since a search of images isn't finding ANYTHING like it, I'll rip it open
where I hope to find what the battery charger voltage & amps is inside.

Thanks for all the advice.

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* Origin: To protect and to server (3:633/280.2@fidonet)

On 05/07/2025 6:07 PM, Uncle Bob wrote:

On Wed, 7 May 2025 15:16:17 -0400, Paul wrote:

The whole job is not an easy task -- unless the white lettering is
still visible on the bottom.

Thanks for looking at it where you noticed there's NOTHING by way of description other than the one brand name on the outside top cover.

I made a small mistake in the links to the pictures which I fixed below. https://i.postimg.cc/rySRMrvs/hyundai-a.jpg https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg https://i.postimg.cc/j27y7YjV/hyundai-e.jpg https://i.postimg.cc/4Ng4zRLJ/hyundai-f.jpg

This is a google search for images of a similar 14-inch Hyundai laptop. https://www.google.com/search?tbm=isch&q=hyundai+14+laptop

Since a search of images isn't finding ANYTHING like it, I'll rip it open where I hope to find what the battery charger voltage & amps is inside.

Thanks for all the advice.

For best results, I would rip it apart using all of the proper techniques.

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: A noiseless patient Spider (3:633/280.2@fidonet)

On Wed, 5/7/2025 6:07 PM, Uncle Bob wrote:

On Wed, 7 May 2025 15:16:17 -0400, Paul wrote:

The whole job is not an easy task -- unless the white lettering is
still visible on the bottom.

Thanks for looking at it where you noticed there's NOTHING by way of description other than the one brand name on the outside top cover.

I made a small mistake in the links to the pictures which I fixed below. https://i.postimg.cc/rySRMrvs/hyundai-a.jpg https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg https://i.postimg.cc/j27y7YjV/hyundai-e.jpg https://i.postimg.cc/4Ng4zRLJ/hyundai-f.jpg

This is a google search for images of a similar 14-inch Hyundai laptop. https://www.google.com/search?tbm=isch&q=hyundai+14+laptop

Since a search of images isn't finding ANYTHING like it, I'll rip it open where I hope to find what the battery charger voltage & amps is inside.

Thanks for all the advice.

The battery is, if memory serves, 8.4V or two cells in series.
The 8.4V is the fully charged voltage, and 7.4V is closer
to the "nominal" voltage after it settles. Charging it from 12V
makes sense. If a 19V adapter was used, that would be wasteful,
with some amount of heat generated.

Lithium cells have to be charged with a "precision" charger.
The cells have high energy density (which is why we use them),
but they are also fairly unstable and must be treated with respect.
That's why there are videos of laptop fires.

You could use any external voltage you wanted, if there was a
buck converter inside, but I don't think they do the design
that way. Someone in a USENET group, used a "generic" adapter
which had a slightly higher voltage than was required, and
about a month later he wrote back to report the laptop no longer
charged the battery and something had broken. I take this as a
sign that the machines are not tolerant of using the wrong voltage.

Paul

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: A noiseless patient Spider (3:633/280.2@fidonet)

Umberto wrote:

On 04/05/2025 14:51, Paul wrote:

Aren't they usually around 20 volts?

The only recent laptop I've had that used 12V was the Asus netbook.

You can do VCore power conversion, off the +5V rail.

I am sorry for not responding sooner but I had to help someone who was
sick. Here are front and back pictures of the laptop in question. https://i.postimg.cc/rySRMrvs/hyundai-a.jpg https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg https://postimg.cc/delete/S3nngb1Z/c6d4e38d

The one thing that seems to be DIFFERENT from all photos of Hyundai laptops I've found in an images.google.com search is where the trackpad lines up.

Notice that the right edge of the trackpad lines up almost exactly between the "Alt" and "Control" key (actually it hits the edge of the "Alt" key).

I just saw the recommendation to remove the case to read the battery.
I will do that next.
Thanks for your help in identifying what the charger is for this laptop.

You posted in the W10 NG. If this comp runs W10 then is it fairly new
and not made in 1992. If that is the case then just get one of the
cheap 12v PS's from Amazon.


--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: A noiseless patient Spider (3:633/280.2@fidonet)

In sci.electronics.repair, on Wed, 7 May 2025 01:35:43 -0400, Umberto <canaliumberto@impresatrecolli.com> wrote:

On 04/05/2025 14:51, Paul wrote:

Aren't they usually around 20 volts?

The only recent laptop I've had that used 12V was the Asus netbook.

You can do VCore power conversion, off the +5V rail.

I am sorry for not responding sooner but I had to help someone who was
sick. Here are front and back pictures of the laptop in question. >https://i.postimg.cc/rySRMrvs/hyundai-a.jpg >https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg >https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg >https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg >https://postimg.cc/delete/S3nngb1Z/c6d4e38d

Look at the ratio of screen height to width. So now I repeat my
question: Does Hy un Dri make a modern laptop?

The one thing that seems to be DIFFERENT from all photos of Hyundai laptops >I've found in an images.google.com search is where the trackpad lines up.

Notice that the right edge of the trackpad lines up almost exactly between >the "Alt" and "Control" key (actually it hits the edge of the "Alt" key).

I just saw the recommendation to remove the case to read the battery.
I will do that next.

Thanks for your help in identifying what the charger is for this laptop.

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Tweaknews (3:633/280.2@fidonet)

Uncle Bob <uncle.bob@nospam.net> wrote:

On Wed, 7 May 2025 15:16:17 -0400, Paul wrote:

The whole job is not an easy task -- unless the white lettering is
still visible on the bottom.

Thanks for looking at it where you noticed there's NOTHING by way of description other than the one brand name on the outside top cover.

I made a small mistake in the links to the pictures which I fixed below. https://i.postimg.cc/rySRMrvs/hyundai-a.jpg https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg https://i.postimg.cc/j27y7YjV/hyundai-e.jpg https://i.postimg.cc/4Ng4zRLJ/hyundai-f.jpg

This is a google search for images of a similar 14-inch Hyundai laptop. https://www.google.com/search?tbm=isch&q=hyundai+14+laptop

Since a search of images isn't finding ANYTHING like it, I'll rip it open where I hope to find what the battery charger voltage & amps is inside.

https://www.youtube.com/watch?v=uAS2mDoCFng

Not an identical match (the logo is not centred on that one) but pretty
close.

Which leads me to: https://www.walmart.com/ip/HYUNDAI-14-Inch-Hybook-4GB-RAM-128GB-Storage-Windows-10-Home-Laptop-Intel-Celeron-N4020-Expandable-microSD-Slot-Up-256GB-14-1-IPS-Display-WiFi-Blueto/266069040

(something odd about the pictures there - it appears to have two microSD
slots. I wonder if they've been letting AI near the pictures...)

7.4V battery according to the specs.

I managed to find 3 power adapters on ebay and Amazon for it, however:
One just says Output: 20W Max
Another looks like AI has mangled the text

This one has the output specs blanked out: https://www.amazon.com/Kircuit-HT14CCIC44EGH-HT14CCIC44EGP-HT14CCIC81EG-HTLB14INC4Z4ES/dp/B0CPPMTJYB
but the description says 12V.

So I suppose 12V 2A would do it. That sounds right for a 7.4V two-cell
battery and a buck converter to charge it.

It's a $150 laptop that everyone says is awful, so I wouldn't spend too much
on it :-) But you probably have a 12V adapter lying around anyway.

Theo

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: University of Cambridge, England (3:633/280.2@fidonet)

Theo <theom+news@chiark.greenend.org.uk> wrote:

On Wed, 7 May 2025 15:16:17 -0400, Paul wrote:

The whole job is not an easy task -- unless the white lettering is
still visible on the bottom.

Thanks for looking at it where you noticed there's NOTHING by way of
description other than the one brand name on the outside top cover.

I made a small mistake in the links to the pictures which I fixed below.
https://i.postimg.cc/rySRMrvs/hyundai-a.jpg
https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg
https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg
https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg
https://i.postimg.cc/j27y7YjV/hyundai-e.jpg
https://i.postimg.cc/4Ng4zRLJ/hyundai-f.jpg

This is a google search for images of a similar 14-inch Hyundai laptop.
https://www.google.com/search?tbm=isch&q=hyundai+14+laptop

Since a search of images isn't finding ANYTHING like it, I'll rip it open
where I hope to find what the battery charger voltage & amps is inside.

https://www.youtube.com/watch?v=uAS2mDoCFng

Not an identical match (the logo is not centred on that one) but pretty close.

Which leads me to: https://www.walmart.com/ip/HYUNDAI-14-Inch-Hybook-4GB-RAM-128GB-Storage-Windows-10-Home-Laptop-Intel-Celeron-N4020-Expandable-microSD-Slot-Up-256GB-14-1-IPS-Display-WiFi-Blueto/266069040

(something odd about the pictures there - it appears to have two microSD slots. I wonder if they've been letting AI near the pictures...)

7.4V battery according to the specs.

I managed to find 3 power adapters on ebay and Amazon for it, however:
One just says Output: 20W Max
Another looks like AI has mangled the text

This one has the output specs blanked out: https://www.amazon.com/Kircuit-HT14CCIC44EGH-HT14CCIC44EGP-HT14CCIC81EG-HTLB14INC4Z4ES/dp/B0CPPMTJYB
but the description says 12V.

So I suppose 12V 2A would do it. That sounds right for a 7.4V two-cell battery and a buck converter to charge it.

It's a $150 laptop that everyone says is awful, so I wouldn't spend too much on it :-) But you probably have a 12V adapter lying around anyway.

Theo

Then there's also the problem of which size DC connector it uses.
2.5mm x 0.7mm
3.5mm x 1.35mm
3.5mm x 1.1mm
4.0mm x 1.7mm
4.8mm x 1.7mm
5.5mm x 1.7mm
5.5mm x 2.1mm
5.5mm x 2.5mm
6.3mm x 3.0mm
6.0mm x 4.4mm
6.3mm x 4.4mm

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: - (3:633/280.2@fidonet)

On 5/7/2025 9:58 PM, Paul wrote:

On Wed, 7 May 2025 15:16:17 -0400, Paul wrote:

The whole job is not an easy task -- unless the white lettering is
still visible on the bottom.

Thanks for looking at it where you noticed there's NOTHING by way of
description other than the one brand name on the outside top cover.

I made a small mistake in the links to the pictures which I fixed below.
https://i.postimg.cc/rySRMrvs/hyundai-a.jpg
https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg
https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg
https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg
https://i.postimg.cc/j27y7YjV/hyundai-e.jpg
https://i.postimg.cc/4Ng4zRLJ/hyundai-f.jpg

This is a google search for images of a similar 14-inch Hyundai laptop.
https://www.google.com/search?tbm=isch&q=hyundai+14+laptop

Since a search of images isn't finding ANYTHING like it, I'll rip it open
where I hope to find what the battery charger voltage & amps is inside.

Thanks for all the advice.

The battery is, if memory serves, 8.4V or two cells in series.
The 8.4V is the fully charged voltage, and 7.4V is closer
to the "nominal" voltage after it settles. Charging it from 12V
makes sense. If a 19V adapter was used, that would be wasteful,
with some amount of heat generated.

Lithium cells have to be charged with a "precision" charger.
The cells have high energy density (which is why we use them),
but they are also fairly unstable and must be treated with respect.
That's why there are videos of laptop fires.

You could use any external voltage you wanted, if there was a
buck converter inside, but I don't think they do the design
that way. Someone in a USENET group, used a "generic" adapter
which had a slightly higher voltage than was required, and
about a month later he wrote back to report the laptop no longer
charged the battery and something had broken. I take this as a
sign that the machines are not tolerant of using the wrong voltage.

Why is a step down DC to lower DC converter called a buck converter?
Shouldn't it be called a variable duty cycle converter instead?
I s'pose the name contrasts better with that of a boost converter.

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: rocksolid2 (novabbs.org) (3:633/280.2@fidonet)

Using <news:vvgrub$1akkf$1@dont-email.me>, knuttle wrote:

For best results, I would rip it apart using all of the proper techniques.

The op will need a spudger kit and maybe those pentacostal screwdrivers. https://www.amazon.com/STREBITO-Screwdriver-142-Piece-Electronics-Precision/dp/B08SGM6F79/

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: i2pn2 (i2pn.org) (3:633/280.2@fidonet)

In sci.electronics.repair Peter <confused@nospam.net> wrote:

Theo <theom+news@chiark.greenend.org.uk> wrote:

I managed to find 3 power adapters on ebay and Amazon for it, however:
One just says Output: 20W Max
Another looks like AI has mangled the text

This one has the output specs blanked out: https://www.amazon.com/Kircuit-HT14CCIC44EGH-HT14CCIC44EGP-HT14CCIC81EG-HTLB14INC4Z4ES/dp/B0CPPMTJYB
but the description says 12V.

So I suppose 12V 2A would do it. That sounds right for a 7.4V two-cell battery and a buck converter to charge it.

The video also has a discussion about the '20W' PSU and 'what's 12 times 2 it's not 20', which suggests it's marked 12V 2A.

It's a $150 laptop that everyone says is awful, so I wouldn't spend too much
on it :-) But you probably have a 12V adapter lying around anyway.

Theo

Then there's also the problem of which size DC connector it uses.
2.5mm x 0.7mm
3.5mm x 1.35mm
3.5mm x 1.1mm
4.0mm x 1.7mm
4.8mm x 1.7mm
5.5mm x 1.7mm
5.5mm x 2.1mm
5.5mm x 2.5mm
6.3mm x 3.0mm
6.0mm x 4.4mm
6.3mm x 4.4mm

https://hyundaitechnology.com/shop/12v2a-new-hyundai-us-laptop-replacement-charger-adapter-12v-2a-26#attr=
(confirms 12V 2A)

has a picture and it's a slim jack so I suspect the outer is less than 5.5. It's worth having a set of adapters for all the different tips so you can
try them all. eg https://www.amazon.com/TPEKKA-Compatible-Connector-Universal-Connectors/dp/B08G4CYHJ2
(not recommending this particular listing)

Theo

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: University of Cambridge, England (3:633/280.2@fidonet)

On Thu, 5/8/2025 1:13 AM, micky wrote:

In sci.electronics.repair, on Wed, 7 May 2025 01:35:43 -0400, Umberto <canaliumberto@impresatrecolli.com> wrote:

On 04/05/2025 14:51, Paul wrote:

Aren't they usually around 20 volts?

The only recent laptop I've had that used 12V was the Asus netbook.

You can do VCore power conversion, off the +5V rail.

I am sorry for not responding sooner but I had to help someone who was
sick. Here are front and back pictures of the laptop in question.
https://i.postimg.cc/rySRMrvs/hyundai-a.jpg
https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg
https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg
https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg

Look at the ratio of screen height to width. So now I repeat my
question: Does Hy un Dri make a modern laptop?

First of all, for reference, this is a "real" Hyundai laptop.
This isn't 16:9, this is 1:1 the way a South Korean likes it :-)
They could sell this in their domestic market. What this is missing
is the "pencil tray" which is supposed to be near the bottom of the
monitor panel area.

https://www.ebay.com/itm/135022599108

and that gives us this. The real (korean) company, before they sold the name. The domain seems to have been squatted *twice* since this time :-) Amazing.

https://web.archive.org/web/19970730171321/http://www.hei.co.kr/businessE/pc.html

It's a wonder they could sell the trade name seventeen years later and make money off it.

*******

You get the aspect ratio from the pictures.

https://i.postimg.cc/rySRMrvs/hyundai-a.jpg # 13.75 wide chassis https://i.postimg.cc/zvJzJVgH/hyundai-b.jpg # 13.8 diagonal on screen https://i.postimg.cc/KYSyG1Xc/hyundai-c.jpg # 802.11N Wifi dongle on side of unit
https://i.postimg.cc/RVpSBCVq/hyundai-d.jpg # 8.8 tall chassis, Two seven-slot vents on bottom
https://i.postimg.cc/j27y7YjV/hyundai-e.jpg https://i.postimg.cc/4Ng4zRLJ/hyundai-f.jpg # Shows ports

16:9 would be 1.78, unit is 1.56 or 16:10 roughly.
The monitor I'm typing on is 16:10 and 1440x900.
My newest monitor is 1920x1080 and 16:9 .

That's "indeterminate" as far as aging.

*******

Ports are

DC barrel
USB2 (fork symbol) <=== It turns out Hyundai does not use "SS" for USB3. They use black tab USB2, blue tab USB3
HDMI output

USB2 (fork symbol) 802.11N plugged in
Headphone jack 3.5mm
SD slot of some sort ?

Which means the poor thing had zero networking ? Not likely. The Hybook in the Youtube video, had one Wifi cable shown coming from the CPU area. I would think the thing would have Wifi, if they choose to not put an Ethernet port on it!

That makes the unit about twelve years old, as a rough guess.
The date on the internal battery brick should be a very good indicator of age. A person is unlikely to be screwing around with battery brick replacements
on a unit like this, even though this one is dead-easy to do.

The units shown on the Hyundai website today, are older units (designs not
spun this year), so they are presumably trying to clear out stock.

My desktop of that vintage, has USB3, but it has that because it
has add-on Asmedia chips to make it possible. The Southbridge only
had USB2 ports on it (a bit backward). This unit is unlikely to
be collecting outboard chips for additional functions. If the
unit was newer, a full raft of USB3 would be part of the
Southbridge/PCH or could even come from the SOC part of the CPU.
Some CPUs now, have two SATA ports on them.

If Hyundai made older stuff, they may have changed the web site domain name. That will make it harder to trace.

As the OP noted, the alignment of the trackpad, to the row of keys
next to it, is not like the units currently on the Hyundai site.

Tracking down seventeen years worth of missing web sites,
is still a challenge. Can you get drivers for these
things ? Maybe I should concentrate on "Hyundai laptop driver"
in Google, to sniff out some more domains.

OMG. The twits! Notice they are using a non-standard port number for a web site.
Classic high school goodness. (Not on archive.org either)

http://download.hyundaitechnology.com:5000/fbsharing/uWt983Gg

I love the "smell of happy customers" burning in the morning air...

( https://support.hyundaitechnology.com/support/discussions/topics/6000052304 )

Summary: Just plug in a 12V adapter with the correct polarity and move on.
The battery pack is likely to be 8.4V (two lithium cobalt cells
at top charge voltage), and 12V input will get the job done.
If the machine catches fire, well, that's about all it is worth
if the white lettering is missing from the bottom of the chassis.
You can't even track down drivers for these stupid things.

The Hyundai "gaming laptop" was different, more of a 19V design with
a more common kind of battery pack.

For safety, take the bottom off, read the battery pack voltage,
use the 12V adapter idea if the pack reads 8.4V/7.4V (charging/nominal).

If the unit had an eject-able battery pack, then that would
definitely be a different voltage.

Paul

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: A noiseless patient Spider (3:633/280.2@fidonet)

On Thu, 5/8/2025 7:21 AM, Larry Wolff wrote:

Why is a step down DC to lower DC converter called a buck converter? Shouldn't it be called a variable duty cycle converter instead?
I s'pose the name contrasts better with that of a boost converter.

There are three types, buck, boost, and buck-boost :-)

The buck-boost is the most complicated.

If you have a five volt input device, and the output is
variable and knob adjustable, then to make six volts
on output it runs in boost mode, and to make four
volts it runs in buck mode.

Someone at work commissioned someone outside the company
to build us a buck-boost on a PCB and the circuit was huge
in terms of component count.

In principle, you could do a boost first, followed by a buck,
and get a dial-adjustable voltage. But that's two conversions,
and the boost might only be 80% efficient, and the circuit
is going to get warm if you do it that way. A fully integrated
buck-boost changes modes, so there is only ever one conversion
going on at a time.

Buck is pretty efficient, or at least, it's easier to optimize.

*******

And thank goodness, there's a Wiki for this. As a bonus,
it even covers some of the methods used in LED lighting
(SEPIC and CUK, at least according to one article).

https://en.wikipedia.org/wiki/Buck%E2%80%93boost_converter

Paul

--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: A noiseless patient Spider (3:633/280.2@fidonet)

On Thu, 5/8/2025 7:42 AM, Theo wrote:

In sci.electronics.repair Peter <confused@nospam.net> wrote:

Theo <theom+news@chiark.greenend.org.uk> wrote:

I managed to find 3 power adapters on ebay and Amazon for it, however:
One just says Output: 20W Max
Another looks like AI has mangled the text

This one has the output specs blanked out:
https://www.amazon.com/Kircuit-HT14CCIC44EGH-HT14CCIC44EGP-HT14CCIC81EG-HTLB14INC4Z4ES/dp/B0CPPMTJYB
but the description says 12V.

So I suppose 12V 2A would do it. That sounds right for a 7.4V two-cell
battery and a buck converter to charge it.

The video also has a discussion about the '20W' PSU and 'what's 12 times 2 it's
not 20', which suggests it's marked 12V 2A.

It's a $150 laptop that everyone says is awful, so I wouldn't spend too much
on it :-) But you probably have a 12V adapter lying around anyway.

Theo

Then there's also the problem of which size DC connector it uses.
2.5mm x 0.7mm
3.5mm x 1.35mm
3.5mm x 1.1mm
4.0mm x 1.7mm
4.8mm x 1.7mm
5.5mm x 1.7mm
5.5mm x 2.1mm
5.5mm x 2.5mm
6.3mm x 3.0mm
6.0mm x 4.4mm
6.3mm x 4.4mm

https://hyundaitechnology.com/shop/12v2a-new-hyundai-us-laptop-replacement-charger-adapter-12v-2a-26#attr=
(confirms 12V 2A)

has a picture and it's a slim jack so I suspect the outer is less than 5.5. It's worth having a set of adapters for all the different tips so you can
try them all. eg https://www.amazon.com/TPEKKA-Compatible-Connector-Universal-Connectors/dp/B08G4CYHJ2
(not recommending this particular listing)

Theo

https://en.wikipedia.org/wiki/Coaxial_power_connector

5.50 2.10 M

5.50 2.50 N

The letters are the Adapt-A-Plug designation. M and N are
pretty common for low-current electronics.

But some laptops have used relatively large and ugly barrels,
for no good reason. Maybe that's part of preventing
other adapters from being used.

Paul


--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: A noiseless patient Spider (3:633/280.2@fidonet)

On Thu, 5/8/2025 1:10 AM, micky wrote:

Does HyunDai make a modern laptop?

In the same way that Duracell makes USB sticks :-)

https://www.walmart.ca/en/ip/Duracell-3369295-8-GB-USB-Flash-Drive/5VXQ8JIN2CCK

Paul



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: A noiseless patient Spider (3:633/280.2@fidonet)