Hello, I'm having issues with this acer nitro 5 GH53G LA-L191P, I bought it for repair and found out the problem was de BQ24781, replaced this and the laptop worked, but the battery was on 4v and didn't charge beyond that, on windows was detected, but on 0%, so I used the power supply to try to charge the battery, with the laptop off, so at some point the battery took current and I was on this for two minutes (used 14v/2a, label says 15/17v max) and after this the laptop stopped taking current and when I tried to turn it on, it doesn't.
So I measured the laptop and when plugged in I got...
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03-13-2025, 04:23 AM
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Hello,
I have this Samsung Chromebook that has a corporate lock and i cant use it. Can someone remove this lock on the bios file?
Model: XE310XBA-KC1US, BA98-02032DIG
Motherboard BA62-01035A REV:1.0 JOAN-15
S/N: 4WQR9FBR440766K
Bios file in attachement.
Thanks in advance....Yesterday, 04:37 AM -
Good morning, I signed up for this forum because I need help fixing my LogitechG502 Lightspeed.
So I got a cheap used G502 under the pretense that the USB was busted and while it would charge, on wired mode it would not work, windows would not recognize it, or even give the little jingle when plugged in... but it would charge.
So I think "ok challenge accepted, it's probably that the data bus on the usb is busted. I solder in a new one and I get a cheap wireless G502 that I've been wanting for years!"
Nope, wireless doesn't work either, G-hub detects...03-13-2025, 04:27 AM -
Hi there
Would anybody know why a Dell Inspiron 5323 dosnt charge?
The Battery was replaced after really badly Bulging, to the point where the case was being pushed open.
What component would fail if it was overcharged to this point?
The Laptop works perfectly on the Power Adapter.
I don't have a Boardview or Schematic
Could it be the Charge IC BQ07A?
Any help would be appreciated
[URL=filedata/fetch?id=3594621&d=1742172274][ATTACH=JSON]{"alt":"Click image for larger version...Yesterday, 06:45 PM -
Hi Everyone.
Board number is: LA-L171P Rev: 1A
This laptop came to me as faulty.
After some measurments I have noticed that 3.3V line has 5ohms resistance. After injection, EC was lit up like a christmas tree.
EC removed, Short is gone, and every other line shown normal resistances so I have ordered a new pre-programmed EC
EC come and I have soldered it. (Checked pins 4 times for shorts and connections to pad)
Now when AC plugged in, The following lines come up normal:
+ VCIN1_AC_IN = 3.3V
+3VLP = 3.3V
+ EC_ON = 3.1V...03-05-2025, 09:35 AM -
Hey everyone,
This power supply board is hard to find but there are repair kits available. This board had a blown fuse, FP801S, blown PFC MOSFET, QP802CS and ceramic cap, CP809. I replaced them with parts I already had and tested the rest of the parts that would've come in the repair kit and they were fine. I powered the board up on the bench expecting, in typical Samsung power supply board fashion, to see all my output voltages but, nothing. 0 volts on CNL801, CNM801 and CNT801. The only thing I have is 170vdc on the filter caps. No standby voltage either.
Anybody...Today, 06:20 AM -
Lenovo M70Q gen 3 11T3
HB660 NM-D861
IQ6X0IL2
Computer was turned off while updating bios, no post only front led and fan spin for around 2-3 seconds then it turns off.03-15-2025, 08:15 PM -
-
Hello, I have a 470 mining edition with a DVI video port. This GPU is recognized by the PC, sometimes it can work with load and be used without problems, but from one moment to the next it can stop giving video and stop being recognized by the PC. I tried changing the BIOS, changing the BIOS chip, reflow in the core and memories, it should be noted that at all times the GPU has all the voltage rails in perfect condition. It was tested on another PC while in mine it was not recognized and if it detected it, it no longer works correctly. My PC is an i5 with a 4th Asrock motherboard, the PC where...Today, 06:26 PM
-
I have this TV hooked up to only an AppleTV 4K and a Creative soundbar. Originally HDMI-CEC and HDMI-ARC wouldn't work at all, I replaced all the HDMI cables with decent UGREEN cables meeting the latest standards, now it all works perfectly but once or twice a day the TV itself reboots while watching a program, the AppleTV keeps running. I haven't fully pinned down whether it is ARC or CEC causing it yet. All are running latest firmware.
I assume it is just HDMI-CEC being buggy as usual on a shitty Vestel machine, but can anyone think of anything I can try before disabling it?03-12-2025, 03:42 PM
-
Hi there guys. This is my first post on this forum and my first attemp to fix a problematic board. Ill give you a litle pre history of the device. The Macbook was powering on but it wasnt charging (it was showing an X sign on the battery icon) i went to my local apple authorised repair centre and they told me that they tried with a new battery and charging port but the issue was still there so they said its a board issue. The laptop belongs to my partner and she already ordered a new one but she considers the data gone on this one. I want to try my best to fix it and surprise her. The laptop at...Today, 06:00 AM
-
Hello there everybody, I'm not sure if it's the right topic to ask this but I hope so.
I have a CNC machine wired to 3-phase 230V AC.
It's a smaller CNC machine with a 3500W motor, do it does not uses much power.
The problem is, when the residents come home and put load on the network, the voltage can drop to around 207V which is fine for most household items but by CNC machine stops working from this.
I contacted the electricity company but they refuse to help me solve this problem.
So I started to look around for some DIY...Today, 05:52 AM -
Hello, I have a 470 mining edition with a DVI video port. This GPU is recognized by the PC, sometimes it can work with load and be used without problems, but from one moment to the next it can stop giving video and stop being recognized by the PC. I tried changing the BIOS, changing the BIOS chip, reflow in the core and memories, it should be noted that at all times the GPU has all the voltage rails in perfect condition. It was tested on another PC while in mine it was not recognized and if it detected it, it no longer works correctly. My PC is an i5 with a 4th Asrock motherboard, the PC where...Today, 06:26 PM
-
Hi guys, I’m back here my friend give me her tv, that doesn’t turn on and no standby red led. When u plug in the cord the red led of one two second is on, then turn off. If you push the power button or the remote the red led blinks but nothing happen. I give u some photo with voltage, don’t look the fuse….because I blow it for mistake nd I dint have the right replace so I just put it for test the tv. The standby voltage should be 11,88 volt on the diode, but I have 13 volts. I put in the photo the different volts I test and there are someone negative…I don’t know if it s normal. On...Today, 04:23 AM
-
i need help to repair bios e14 core i7
sn PF-4LAH2V 21jk-0053us
NM-F311 v0.1...Today, 08:07 AM -
Hi everyone,
We're working on an [B]A2485 MacBook[/B] with [B]no backlight[/B] after liquid damage. The damage occurred near the [B]backlight IC (UP800)[/B]. We've checked all the nearby [B]resistors and capacitors[/B], and everything seems fine. We replaced [B]UP800 from a donor board[/B].
However, [B]UP830 was also liquid damaged[/B], and after cleaning, [B]resistor RK830 came off[/B]. Unfortunately, I can't find its value, and the schematic doesn't indicate it as a critical component.
Would anyone have insights or a way to confirm the RK830 value?
...Today, 12:22 PM -
Hello can help me rebuild my old bios dump
my old bios can't display
TIPE : B1400CEAE-BV3420W
SN : N2NXCV15A08908D
BOARD : B1400CEPEY R.2.1...Yesterday, 11:02 PM -
please can anyone remove the enrollment or mdm from this bios. thanks
lenovo p15v gen 3
sn : PF-43ZJX6
board : [B]JP6A0/JT6A0 NM-E221 Rev: 1.0[/B]please can anyone remove the enrollment or mdm from this bios. thanks
lenovo p15v gen 3
sn : PF-43ZJX6
board : [B]JP6A0/JT6A0 NM-E221 Rev: 1.0[/B]...03-15-2025, 05:53 AM -
I quiet struggling with board lenovo c681 to disable 4gb samsung onboard ram because they're faulty, I followed the instruction on the schematic to disable them with resistor codes but still not detecting the ram on the slot.
can someone disable onboard ram from my dumped bios, please 🙏
I tried the other bios on this forum with disabled onboard ram, but no success
my final try is to find someone that can help disable onboard ram in my dumped bios attached in this post.
after that I officially give up 😂
thanks for awesome jobs 😊...Yesterday, 12:51 PM -
Hey everyone,
This power supply board is hard to find but there are repair kits available. This board had a blown fuse, FP801S, blown PFC MOSFET, QP802CS and ceramic cap, CP809. I replaced them with parts I already had and tested the rest of the parts that would've come in the repair kit and they were fine. I powered the board up on the bench expecting, in typical Samsung power supply board fashion, to see all my output voltages but, nothing. 0 volts on CNL801, CNM801 and CNT801. The only thing I have is 170vdc on the filter caps. No standby voltage either.
Anybody...Today, 06:20 AM