PS4 pro won't start, beeps on cd player

[fab13]

Hello ,

A friend of mine dropped off his PS4 pro console and it won't boot on the power button but we can hear the CD player beep.
I can't find the solution

Test with another new and functional power supply, I get out well the 5 Volts standby and the 12 Volts when I shunt the power supply and remains stable in 12 Volts.

Test 3V battery bios ok and at the output terminal of the power cable power button I have 3 Volts and new cable and no trace of rust or anything. The console does not start.

I've checked for short circuits everywhere, HDMI port, video chip, southbridge and usb port, all diodes, and in diode mode everything seems fine.

However, I found it strange that the GPU measurement was 1.2 Ohm, which is perhaps normal for a ps4 pro console? because even with graphics cards, the GPU level is close to 1 Ohm for recent cards.

Any idea where I can check?

I've been working on it for 3 days :mdrsign:

[fab13]

Re: PS4 pro won't start, beeps on cd player

For your information, I found the problem: the 32kz crystal oscillator was no longer working, tested it with an oscilloscope and the console works.