Acer Aspire 3 ( dh5jv la-g021p Rev:1)

[Jane]

The laptop does not start. 19V, 5V and 3.3V are present.
ON/OFF button is a part of keypad. Is there a way how to check that ON/OFF button is working ( without replacing the keypad)?
Or is it BIOS problem? Or anything else?
What to try?
Thank you for a hint.

[mon2]

https://youtu.be/YsisRlG_buk?feature=shared

[Jane]

Thank you for the link. I followed the video. Shorted pin 27 and 28 but the laptop /fan did not start and it takes ( during time Iam shorting pins) about 1mA only.
( If keypad flex is unplug there is about 3.3V on pin 27. If keypad is pluged there only 0.3V. Pin 28 is ground.
What should I try next?Thank you for help

[mon2]

What is the history of this laptop? Just died one day?

using original power adapter?

[Jane]

Yes, just died one day. I use universal adapter that worked with every laptop in the past

[mon2]

Would you have the attached parts on your board? This is from the Acer Aspire v3-571G schematics in my database.

[SMDFlea]

LA-G021P Schematic https://www.badcaps.net/forum/troubl...021p-schematic

[Jane]

Not sure I fully understand. There is PWR button as a part of keypad, as we spoke above.Not separated.
I enclosed a picture of the mainboard

[Gcs_rma]

Not sure I fully understand. There is PWR button as a part of keypad, as we spoke above.Not separated.
I enclosed a picture of the mainboard

ON/OFFBTN# is SWK1

[Jane]

Do you mean there might be an alternative/another way how to start the laptop?Via SWK1 ?

[mon2]

Yes.

[Jane]

I tried to start the laptop via SWK1 but still the same behaviour - the laptop did not start.
Do you think it can be BIOS problem or SuperIO or different problem?