Hiii frnd i have nal60 la-5691p rev 1.0 motherboard in facing the problem when im press power on the power on led on but all motherboard not generates any one have any idea plz reply
-
Does the Voltage Regulator ISL95859C supply +5 volt at pin 34 for the mosfet drivers or integrated Power Stages ?
https://www.farnell.com/datasheets/3109343.pdf -
Dear members,
I have an HP Elitebook 2540P laptop with mainboard: LA-5251P REV 1.0
It has a SIO with model: SMSC KBC1098
I think both the EC firmware and the main Bios reside in a single Bios chip.
Problem: KBC1098 is partially defective so that it does not generate ADP_En at Pin 75 and generates 8 amber blinks on the charging LED, indicating some wrong input.
Idea: Now I need to modify the EC firmware so that KBC1098 ignores the wrong input conditions and always generates a high ADP_En and does not enter a failure state.
Is it possible...05-21-2024, 01:35 PM -
Hello everyone. I received an HP 15-cx0054ur (DPk54 LA-F841P Rev:1A) with a problem - it won't turn on. During the inspection, I found a faulty chip marked 8AAB0G , but I couldn't find any information about it. In the board viewer, it is marked as PUH1 , but I don't have a full schematic. According to the board viewer, this is a power controller that generates +0.95VS_VCCIO . If anyone has an alternative marking for this chip, a partial schematic with it, or any other information, I would be very grateful .
LA-F841P Boardview - https://www.badcaps.net/forum/troubl...-hardware-devi... -
Hi all,
I have a 3080 with seemingly correct rail resistances and all voltages present apart from the PEX,
12VEXT: >1KOhm and rising: 12v
5V: 2.4KOhm: 5v
1.8V: 2.3KOhm: 1.8v
MEM 54Ohm: 1.3v
PEX: 5.1Ohm: 0v
I found that a zero ohm resistor that powers the AOZ2261NQI-11 IC (from 12v EXT) which generates PEX was open,
on further inspection the IN rail of the chip was shorted, I injected voltage and saw it warm up, once the chip was removed short was still present and I realized it was coming from the other side of the... -
HELLO EVERYONE, I HAVE A MACBOOK PRO A2338, WHICH TURNED OFF OUT OF NOWHERE, THE USB TEST GENERATES 20 VOLTS BUT AFTER A WHILE IT RESTARTS... I TRIED TO RESTORE BUT I GOT ERROR 4014... ANY IDEAS?06-06-2025, 10:33 AM
Comment