Electronics > Repair

What more i can do?

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Harry_22:
 While you have a time check TP1 signal at other non working boards.

222Lab_Test222:

--- Quote from: Harry_22 on November 19, 2024, 04:07:05 am ---Yes, check it please.
But your board don't work anyway.
You nothing to break down.

--- End quote ---

I dont think RTC has issues as Other similar non working board shows same results.

what shall i do after desolder?

222Lab_Test222:

--- Quote from: Harry_22 on November 19, 2024, 04:09:26 am --- While you have a time check TP1 signal at other non working boards.

--- End quote ---

I checked 2 more Non Working Motherboard , with TP1 and there are similar.

Harry_22:

--- Quote from: 222Lab_Test222 on November 19, 2024, 04:27:26 am ---
I checked 2 more Non Working Motherboard , with TP1 and there are similar.

--- End quote ---

Perfect!

So try to unsolder RTC chip.
Thus we disconnect Pin 11 which generates pulses with 64 Hz frequency.
There are a lot of D4990A on Ali.
Just raise 11 pin as I wrote but literally by half a millimeter.

I have another one approach to your problem from Beeper side. More on this later on.

Sorama:
Maybe you can follow the beeper signal to know what it triggers and thus understand the conditions and analyze those conditions ?

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