Hi friends i have a problem with this acer one d270 the first problem is no power but all voltages present so i flashed the bios now can power on, but the problem if you shutdown you have to wait for at least 10 minutes before you can power on. and also when i connect internal screen it shows display and after a minutes goes off, but with external monitors it shows fine, but after i shutdown cannot power on again need to wait 10 minutes to turn on again.Anyone can help on this please
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[HELP] Acer AN515-55 (LA-J871P Rev: 1B) – Board won't power on after GPU investigation – Suspecting Super I/O or PCH
Hi everyone,
I'm working on an Acer Nitro 5 unit with the following specs:- Motherboard: LA-J871P Rev: 1B
- Model: Acer AN515-55-59MT
- S/N: NHQ7JAL00403906A973400
- SNID: 03902728734
Initial Issue
The laptop initially presented graphic issues and driver failure (Code 43) for the GPU.
After preventive maintenance (cleaning, thermal paste, etc.), it powered on normally. We disassembled it again to inspect the GPU, reassembled... -
When I reflash again the bios of hoaca388 the unit powers on and the unit lives!!! Hooray!! All voltage in the coil 3.3v, 5v and 6.7v indicate charging are all present. including the cpu voltage , EEPROM and GPU voltage the unit is now alive, normal screen booting to windows and log in screen until I power it off. Then the unit never goes on even when pressing the power button in the keyboard.. Voltage reading 19v main , 3.3v VCC in IT8225E-128 and EEPROM VCC 0 volt and the charging voltage 0 volt.
Try to trace the power switch button goin to the power switch IC PU8803 (APL3533AQBI-TRG)... -
Dear All,
Please really2 need Help on this Acer A515-52G Motherboard Compal EH5AW LA-G521P Rev: 1A.
At first this laptop can on, keyboard light on but no display. Open the motherboard, found out the PQZ3 Mosfet and PUZ3 ic near it burn. Refer picture below. Then I replaced both. All the power rail 3.3,5,1.2, 1.35, 0.8V have power back after i turn on the laptop except for the VCC_GT rail. Voltage at Power Supply showing 0.000A before turn on, after turn on it became 0.5 0.6A. Seem cannot boot and still no display. Then I replaced the PUG1 and mosfet, but the VCC_GT still no power.... -
I am seeking guidance on an Acer Spin 1 SP111-33 that does not turn on when pressing the power button.
Below are the observations and troubleshooting steps I have taken so far: Observations and Tests:- Verified that all critical voltages are present:
- 3.3V and 5V are always present if DC is plugged.
- 1.8V on the BIOS chip is present.
- Checked the power button functionality:
- When pressed, the voltage drops to 0V, indicating the button is functional.
- Inspected the flex cable connecting the USB, audio, and power button to JUB1:
- Confirmed connectivity is intact, ruling out issues
11-26-2024, 12:39 AM - Verified that all critical voltages are present:
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HI everybody, i need help with this laptop
Acer aspire one d270
mobo quanta ze7.
the laptop doesn't powerup, battery charges properly full battery blue light its present.
+5vpcu and +3vpcu are present, after pressing power button +5V-S5, +3V-S5,EC RSMRST#(3.3V) and DNBSWON(3.3V) gets enabled for few seconds and then goes off.
I followed the service manual power sequence 30 pin connector in page 16 after pin 7 DNBSWON# i have nothing, i don't have any voltages on SUSC# SUSB# SUSON MAINON.
any help will be appreciated.
https:...12-03-2023, 10:42 PM