PS4 PS4 PRO not beep and not turned on

[hamed republic]

Hello friends, I have a ps4 pro device that sometimes does not turn on .
I opened the device and checked the power, the power is completely healthy .
The motherboar power connector on the board has already been removed and repaired. I tested the pins with a multimeter. When the console does not turn on, the ACDC_STBY pin is connected to the ground and after a while this problem is solved by itself. Does anyone know if these pins 5v_sby and acdc_stby are exactly on Where does motherboard go? thanks

 

[jetuaime81]

i believe yours is a 70xx series so can you please give me the values of these 2 resistors please. Also a very close up photo (macro shots if possible) of the area behind hdmi port please i am missing some components.

https://www.psx-place.com/threads/need-help-with-missing-smd-components-ps4-pro-board-nva-001.40404/

 

[jetuaime81]

Hello friends, I have a ps4 pro device that sometimes does not turn on .
I opened the device and checked the power, the power is completely healthy .
The motherboar power connector on the board has already been removed and repaired. I tested the pins with a multimeter. When the console does not turn on, the ACDC_STBY pin is connected to the ground and after a while this problem is solved by itself. Does anyone know if these pins 5v_sby and acdc_stby are exactly on Where does motherboard go? thanks

The ps4 power supply has 4 pins Vin (4.8v), gnd, acdc_stby and acin_det (4.8V). Both the 4.8V Vin and acin_det should be present on a working powersupply and when you plugin to ps4 motherboard, an initialisation occurs (for about 2 seconds). Then when you press power button, i believe the southbridge gives around 3.5 to 4.8v on pin acdc_stby and this is the signal that tells the power supply to become active and give 12V. Only the GND pin is ground no other pin should show ground on both psu and ps4 side. Im sorry but this all i know for sure.

You told the acdc_stby pin is connected to ground; is it grounded on the motherboard or on the psu side? If on the motherboard most likely its a failing smd capacitor (but it could also point to a failing southbridge). You could try voltage injection to find the short (but just 1 volt)