Hi,

I have a MacBook Pro 13 inch [B]A2238 M2[/B] and it was stuck 5V with 0 amps. I measured some important lines and I found a short on [B]PP3V8_AON_MPMU_ISNS_VIN[/B], I tried injecting 1v and I saw heat coming from the [B]mPMU[/B] so I removed the pmu thinking that was the problem. I don't know why I didn't check the other side of the border but there it was, a shorted cap. I replaced the cap and the short was gone, so I reballed the PMU and put it on again but voltage was still stuck at 5V and the current was fluctuating between 0 and 0.45 amps. I checked under the thermal camera...

Hello Everyone!
I would like to know the Jumper location for the 2 Amber 7 White Led Blink Code error. According to Dell 2,7 Led codes are for display or the Display cable failure. I didn't changed the display nor the cable. The issue happens only when restarting the machine from windows and from the BIOS. And when opening and closing the lid the display turns off and never turns back on. But the machine is working! I confirmed it by pressing the CAPS Lock key. Does anybody has this issue and fixed it by jumpering some fet near the display connector on the motherboard. If So Please Help...

hi,

unit is a : Lenovo ThinkPad E14 Gen 2 GE4B0 motherboard with the infamous QB6 mosfet de soldering off the board, however the usb c port was replaced by another shop not know the common issue. I replaced the qb6 with a AON7466 however the UB7 started to get really hot and unit would not turn on. I then replaced the UB7 and QB5. I now get 0V on VINT20_IN_F and VINT20_IN on both sides of F6106, however when I inject 12v on either side the unit boots up. Can this be an issue with the USB-C port not soldered properly? I so get 20V 0.039A on the usb-c meter. [TABLE]
[TR]...

I have a Sony Bravia KDL-40V2500 that will not power on. The indicator flashes red 3 times.
I do not hear any sound and I cannot see any backlight.
I have tried disconnecting every cable on each board one at a time to see if anything changes.
The only change is when I disconnect AC-DET cable on the Power Supply board or on the other end if I unplug the CN7009 connection on the B-Board and try to power on the TV the indicator will stay on solid green until I power off.
My friend ordered another used power supply board but it is also doing the red indicator flash 3 times...

Hello everyone,

I have a question regarding this laptop. Laptop came from my friend, completely dead. No reaction for power button, Adpater etc. Diagnosis: burned HIS mostfet from VRAMs. After replacing the mosfet, Laptop starts to power up, KB lights up for few second and switch off, laptop remain ON but no display. Vents are switching ON after some time. No Caps Lock or reaction on USB stick. No display also through HDMI. All coils resistance seems to be OK except resistance on VRAMs – 15 Ohm ( as I study the other repairs or diagnostic of that laptop it should be around 90 -...

[B][SIZE=16px]Zs050 la a992p rev 1.0 Boardview Need.

HP Laptop Model No- 15-r016TU
S.N- CND4464D8N[/SIZE][/B]

hello ,for diy voltage injector for short killer/finder -- is it possible to use something like this - [B]LM317 DC Linear Regulator, DC-DC 4.5~40V Turn 1.2~37V, Step Down Power Module, Adjustable[/B]

and ampere controller along (to make it zero amps ) with some addons(transistors diodes etc.) for it -- and use some 5v adaptor or 3.3v volt rail of my smps power supply as input and finally get 1v and zero amps for injecting voltage to find out short circuit component ? ..
for source input -- can we use 3.3 -4 volt 18550 battery ?( i have some of those ) and then adding ampere...

Hi,

I have a new Asus Zenbook S16, Model UM5606. Unfortunately, the keyboard backlight is too bright, even on the lowest setting. I have explored several ways now:

- kindly ask Asus for an adjustment - they basically told me to STFU and get lost It is not possible, they say. Of course.
- tint the keycaps from behind - I have already tried that - it is kind of a last resort
- try to find out, how it is done, look at schematics - this is, where we are at.
- maybe get the BIOS modified somehow? This would be the best option but I do not know a lot about...

My Lenovo L13 Gen 2 was working perfectly until two days a when it refused to boot after previous used.

When I press the power button, the power led will lit and goes off immediately with the CPU fan concomitantly spinning for few seconds and then stop.

The reset button did not help to resolve the issue. I have also performed hard reset by:

1. Disconnected the battery
2. Unplug the adapter
3. Hold down the power button for 15sec. Then increased to 30sec, 45sec and finally to 1m.
4. Then plug the adapter.

Is it corrupt bios?​...

Following this guide ([url]https://www.reddit.com/r/thinkpad/comments/16v26yl/guide_thinkpad_bios_reading_patching_and_flashing[/url]) i re-flashed my t480s BIOS using an external (CH341A) programmer. The flash didnt work, so i reverted back to my BIOS backup successfully. The BIOS in the chip and the BIOS backup file are identical according to windows' file compare. The revert, however, didnt work: the only thing the computer does is flash the power button 3 times when AC power is connected. I've tried unplugging the CMOS battery, holding the reset button and holding down the power button- no...

[B]Dell Inspiron 15 5567.[/B]
Service Tag: 2SYPX32.
AMD VGA Available.
​bal20 la d801p rev 1.0 a00.
Need Bios Please.


[U][B]Plz Bios[/B][/U][B]Dell Inspiron 15 5567.[/B]
Service Tag: 2SYPX32.
AMD VGA Available.
​bal20 la d801p rev 1.0 a00.
Need Bios Please.


[U][B]Plz Bios[/B][/U][B]Dell Inspiron 15 5567.[/B]
Service Tag: 2SYPX32.
AMD VGA Available.
​bal20 la d801p rev 1.0 a00.
Need Bios Please.


[U][B]Plz Bios[/B][/U]

I rebooted my computer and suddenly it didn't detect. It was nvlinked to another card that works. Lights don't light up. I checked around with DMM from youtube videos but didn't find a really good diagram except the one from 3090 FE. Going by that it looks like this is PEX? In that case the last option is to lift the coil and see which side is shorted or GPU is gone?

This card started out used with a bad HDMI port and worked for about a year. Guess it doesn't work anymore. I was going to send it to a repair service in case of mosfet or some tiny IC they can air station swap. If the...

Hi All, I have a 9th Gen Dell Optiplex micro PC motherboard which doesn't power on. When I connect the motherboard with power adapter, it goes into safe mode and turns off. So from info I have gathered online, it looks like there is a short circuit on the motherboard. So can you guys help me with figuring out the issue?

I am new to electronics repair, so my queries could be naive but I am ready to learn.

So I have a multimeter and a solder with me. But I can try to get a variable voltage power supply with a thermal camera as well. From what I seen online, best way is...

Hi,
I have a DA0BKXMB8D0 rev D motherboard.
There is a short circuit on the 1.8V line.
During the short-circuit test, absolutely nothing getting hot, board take 3A.
What can I do now?

Can someone give me a clean BIOS for Acer nitro 5 an515-57-71CV
With S/N:NHQENSN0031420C1133400
And SNID : 14204942734

I have taken my laptop to a service center in my local area, but it has been almost a month and they said they have not found a local BIOS file. So I will give this BIOS file to them. Thank you!!

Hi everyone,

got an Acer Helios 500 Laptop (PH517-51) for diagnosing with a strange issue:

The laptop runs for a while (1-2 hours, sometimes less) and then suddenly shuts completely off, like someone pulled the power cord and restarts immediately after on its own.
If this happened once, then the laptop only runs for a few minutes until restart.
This happens regardless while staying in windows or uefi or in a linux environment.

At first I thought of a normal overheating issue, but as I monitored temps with HWInfo64, nothing seems very hot.
...

Please i need assistance

Searching for a Boardview or Schematic for

Brand: HP
Model: HP ENVY 16-h1023dx Laptop INTEL i9-13900H
Motherboard: LA-M841P

​A response will be greatly appreciated...

Hi there,
I have a 14" Lenovo Laptop (Flex 5 14ALC05) which has a boot issue.
The little LED on the power button is flashing slowly and nothing happen.
This unit do not have any BIOS button cell battery so I tried many times draining the power but it is still not powering on.

So I decided to flash the BIOS using a cheap programmer.
And I was successfully able to read the content (exactly 16MB file) which BTW is a WINBOND 74m12jwsiq (according to the package inscription - but detected as W25Q128FW in the software - IMSProg on Linux)

I also...

My xbox one s died recently and currently it shows no signs of life. I took it apart and did some troubleshooting using board view to do some voltage checks in areas of interest. It doesn't appear to be a dead short since I get 12v on the caps near the cpu and other voltages like 3.3v, 5v, 1.1v as shown on the board file. I didn't check every point as that would take forever. When I look at it from my thermal camera, the Southbridge chip has a little glow on it when plugged into power.

The power switch on the detachable face board seems to be fine when using the multimeter to check....

Hello, could someone help me? It's about a Dell XPS 13 9350 (1st generation), number D5QZD72-E7A8. I generate codes (BIOS admin) for it through beta.bios-pw.org, but none of them work:

c9RGJk2nMDq1z2Qy
3kk8zjWxyMMyGyry

Any tips? Could someone help me with this?
​

Hi everybody, I'm a beginner and I've got a Lenovo G50-70 with NM-A271 rev 1.0 mobo.
It powers on BUT:
* no display
* fan not spinning
* power led is on and battery led too (if inserted)
* no power consumption without battery, with battery 0.27A
* no shorted coil to ground
* +3VALW, +5VALW and +3VALW_PCH are present
* 3.3V on bios pin 1 is present
* 1.9V on PL302 coil
* I tried to flash bios with external programmer (CH341A) e nothing changed.
Any suggestions?...

I have a customer machine on my bench right now that's stumped all the techs, so I decided to come here for help.

The specs are:
MPG Z590 Gaming Carbon Wi-Fi (MS-7D06)
Intel core i9-10900kf
2x16gb Corsair Vengeance kit
BIOS ver is E7D06IMS.1B0, from 6/12/2023

The machine was brought in because it would not POST after a GPU upgrade from a GTX 1030 to an RTX 3070. The customer also brought in the original GTX 1030, as well as a GTX 1060 that the machine also wouldn't POST with.
I tested the 1060 and 3070 on my bench (ASRock X570 Phantom Gaming...

Hello,

I'm looking to repair this GPU, I have some kind of overheating issue and would like to find out exactly what is going wrong.

I have a MSI ge62vr Apache Pro 6RF. I'm having an issue with this repair that I haven't been able to find a resolution for with my usual sources, so I'm coming here on recommendation from Reddit. A customer decided to attempt to manipulate voltage to the fans through the EC, his laptop shut down and he was not able to get it to come back on. I did a power flush, EC reset, etc. didn't work. Took out my multimeter, no power was going from the charger to the battery. Checked with a different charger. Power was going from the charger to the inlet, but not the battery. Replaced the power inlet, and...

Everyone is buying the wrong CH341A programmer, I have learned from my mistake. Don't buy the Black one or Green one.
Buy this one in the photo. Most stable and all your common problems (reading but not writing/erasing, software hanging, disconnects after attaching chip, test cable connected but chip not found/ device disconnected) will be gone.

Otherwise you'll have to solder capacitor from GND to VCC if you have those symptoms in your black or green miniprogrammer....