Hi,
I bought a faulty A2289 for myself.
The USB-C meter was stuck on 5V.
After remove the board the U3100 was corroded and also around but quite light.
So I clean the U3100 and see R2834 in bad condition and its value was not good.
I replace it and not the USB-C meter shows 20V, the fan is spinning, CPU is hot but nothing else no picture.
The USB-C meters shows a very low current with all connected. It starts at 20v few mA and then stays at 20v 100mA.
How mush current the board is supposed to take without nothing...
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-
Yesterday, 12:20 AM
-
Hi,
This board has slight water damages. No fan spin.
When I power on, I got:
PM_SLP_S4_L
PM_SLP_S5_L
PM_SLP_S3_L
ALL_SYS_PWRGD
all go to 3.3V, then back to 0V after 1s
PP5V_S5=5V
PP3V3_S5=3.3V
SMC_S4_WAKESRC_EN remains at 0V.
With SMC bypass, fan spins full speed.
Can you help on troubleshooting SMC_S4_WAKESRC_EN missing?...Today, 09:37 AM -
Hi,
I have an HP 255 G8 that runs for as long as its battery holds charge but won't accept AC power.
I have partially diagnosed the problem and the issue seems to be that there is no ACDRV output from the BQ24735 to turn on the two input MOSFETs. The 24735 has a VCC of 19.57 V, the ACDET input is at 2.93 V and the REGN 6V LDO is outputting 5.98 V, so everything looks good - but ACDRV is stuck at 28 mV.
I've already replaced the 24735 and both input MOSFETs and nothing has changed.
I'd appreciate some suiggestions as to what to try next.Today, 08:45 AM -
Hello, please could someone help me find or share the EC firmware for the MSI Katana GF76-11UC laptop?
The firmware can also be extracted from the BIOS image, but I can't find any information on how to do that.
Thank youToday, 01:28 AM -
Good morning I have a problem with my [B]Samsung UE49MU6120KXZT (Version 01)[/B] TV with Motherboard[B] BN94-12644A[/B].
After disconnection from 220V the TV remains switched off with status led off. I need information on how to proceed with reprogramming the flash memory and the BIN file to reprogram it.
I have purchased this programmer on Ebay: [B]CH341A EEPROM PROGRAMMER FLASH BIOS 24 25 SERIES + CLIP TEST[/B]. I include photos of the motherboard. I am not very experienced but I would like to learn so the more detailed the information, the better it will be for me...05-17-2024, 04:55 AM -
Hi guys any good tips on how too remove scratches on lcd screens i have two sets with a couple of scratches on the lcds and would like too try and remove them as makes re sale easier many thanks...05-16-2024, 07:31 AM
-
Hi,
I'm troubleshooting a power supply board and one opto coupler seems shorted. It's a through-hole, marked with 3 lines:
1223
816A4
W
I'm not sure what replacement to buy for it. It resembles LTV-816 ([url]https://www.tme.eu/sk/en/details/ltv-816/optocouplers-analog-output/liteon/[/url]), but I'm not sure it's 100% that. The data sheet shows multiple sub-types like 816M, 816S, but 816A is not there.
I do have other functional pieces on the same board, so I could do some measurements on those, but I'm not sure what to check.
Any idea appreciated.Hi,...Today, 03:30 AM -
Hello. Can you please help me with removing the bios password from my Panasonic Toughpad?04-22-2024, 09:21 AM
-
I have a problem with an HP laptop model 250 G5, mainboard LA-C701P. The integrated PU2 is ok, being replaced, but the problem is with the 3.3v LDO voltage, the 5.5V LDO being ok. On pin 15, instead of 3.3V, I have 3.16V and a consumption of 150m, the integrated only supports 100mA, it gets very hot. I injected 3.3V on pin 15 and the consumption remained at 150 mA and there is nothing hot under the thermal chamber. I disconnected the resistance towards pin 125 from the integrated UK1 and the consumption dropped to 0, and I assumed that the consumption is from the integrated. I replaced it with...Today, 08:55 AM
-
Dell Latitude 5590 ST FH1MNQ2
DDM80 LA-F411P REV 1
pwb mp3pg rev A00
Can you help me?
Thx...Today, 04:37 AM
-
Hi,
I have an HP 255 G8 that runs for as long as its battery holds charge but won't accept AC power.
I have partially diagnosed the problem and the issue seems to be that there is no ACDRV output from the BQ24735 to turn on the two input MOSFETs. The 24735 has a VCC of 19.57 V, the ACDET input is at 2.93 V and the REGN 6V LDO is outputting 5.98 V, so everything looks good - but ACDRV is stuck at 28 mV.
I've already replaced the 24735 and both input MOSFETs and nothing has changed.
I'd appreciate some suiggestions as to what to try next.Today, 08:45 AM -
Dell Latitude 5590 ST FH1MNQ2
DDM80 LA-F411P REV 1
pwb mp3pg rev A00
Can you help me?
Thx...Today, 04:37 AM -
The unit had a battery replacement , it used to work with a 2200 mah battery that i have found swollen, i have replaced it with a 1500 mah battery( i couldn't find one available at 2200mAh), tested working, after 2 months of beeing used in the car always plugged to the charger the owner sayed that it's not charging, the battery had 3.3 v instead of 3.7 , i have installed a new battery of 1500mAh, the unit powers on , shows 1% battery and it only draws current when the display is on and only shows the charging icon when i first plug the cable in then it stops after 10 or 20 seconds,and if i turn...Today, 06:18 AM
-
Hi all,
I have here gaming laptop asus ROG with motherboard problem. Only orange LED is on, battery charging. 3.3V is on power button and on bios chip. 5V also present. All resistances on coils looks fine instead of GPU coils, only 0.5-0.6Ohms to ground. I don't know if gpu is dead. Can samoone help me to diagnose this problem? Thanks.
Have someone schematic/boardview for this board?
GX701GX REV. 1.6
[URL=filedata/fetch?id=3274440&d=1716210813][ATTACH=JSON]{"alt":"Click image for larger version Name:\tIMG_3026.jpg Views:\t0 Size:\t2.99...Today, 07:15 AM -
Hi,
This board has slight water damages. No fan spin.
When I power on, I got:
PM_SLP_S4_L
PM_SLP_S5_L
PM_SLP_S3_L
ALL_SYS_PWRGD
all go to 3.3V, then back to 0V after 1s
PP5V_S5=5V
PP3V3_S5=3.3V
SMC_S4_WAKESRC_EN remains at 0V.
With SMC bypass, fan spins full speed.
Can you help on troubleshooting SMC_S4_WAKESRC_EN missing?...Today, 09:37 AM -
-
Please help me repair my bios file not display
Model No: GA-P55M-UD2
attached file is down...Today, 06:47 AM -
Hello, please could someone help me find or share the EC firmware for the MSI Katana GF76-11UC laptop?
The firmware can also be extracted from the BIOS image, but I can't find any information on how to do that.
Thank youToday, 01:28 AM -
I have a problem with an HP laptop model 250 G5, mainboard LA-C701P. The integrated PU2 is ok, being replaced, but the problem is with the 3.3v LDO voltage, the 5.5V LDO being ok. On pin 15, instead of 3.3V, I have 3.16V and a consumption of 150m, the integrated only supports 100mA, it gets very hot. I injected 3.3V on pin 15 and the consumption remained at 150 mA and there is nothing hot under the thermal chamber. I disconnected the resistance towards pin 125 from the integrated UK1 and the consumption dropped to 0, and I assumed that the consumption is from the integrated. I replaced it with...Today, 08:55 AM
-
Model number: Dynabook T552/58HR
Serial number: 5D014496Q
Motherboard number : DK10FG-6050A2509901-MB-A02
Problem: Delay POST and hangs on windows logo when graphics driver is installed
I have done everything possible, it has no graphics, bios bin I downloaded from this site didn't work. Please I need a clean bios. Thanks.
Below is my bios bin file.....Today, 08:09 AM