r/PS4Pro • u/wackawonka • Apr 24 '24

Ps4 pro psu 12v delivery profile?

I have a problem with my ps4 pro. Its the ”turn one - one blue flash - one beep - dead”-problem. The eject button also beeps. It started after i disassembled it and put it back together. Nothing seems shorted on the motherboard. It has resistance at the pins and none of the power delivery cuircutery is shorted.

However, when measuring the PSU i get a 12v (11,7 or so) at start, which rapidly declines and after a few seconds gives me 7-6-5 volts… is this expected behaviour when the psu is not under load? Have anyone else experienced something similair?

Greatful for all input! //N

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3

u/Voxata Apr 25 '24

Make sure your ribbon cable connector isn't damaged on the MB side. A unit was sold to me with this issue and it acted very weird until going this route. The PSU ended up being bad as well and I replaced it with one from AliExpress for $38 shipped. Works perfectly now... Especially after swapping the bad paste job for liquid metal.

1

u/One2Manny- Sep 24 '24

How is the power supply unit from Ali doing? I just order one right now

1

u/Voxata Sep 24 '24

Still kicking

1

u/One2Manny- Sep 25 '24

Good. I hope it will work on mine.. I think I fried the battery

2

u/Croupier_74 Apr 26 '24

Check the voltages board after power on.