ps5 edm-010 one bip ....

[pasdebip]

Hello, I got a PS5 EDM-10 that won't start. UART code 80810001 and C00C0002.
UART startup current: 310 mA then 10 mA.
All the RAMs are shorted, as are the coils, only on the APU side, as well as the GDDR6, RAM, and VCore coils.
The short circuits are between the coils and the APU.
The MOSFETS are fine.
I circled the shorts in red.
If I inject 0.8V into the VCore coils, the APU glows at a specific point at around 40°C + 8 A.
Do you have any leads? Thank you.

[Green Probe]

I have no helpful knowledge, but I am curious. Is this IC missing a corner? Also, what resistance to ground are you seeing at your shorts? I'd expect the APU to have very low resistance to ground.

[pasdebip]

The photo is not visible
the resistance to the ground is 0.00 ohm.
APU has a resistance, on PS5 which works, almost of the same grandeur on the other hand all the rams are short but side ram not mosfet idem for apu

[Green Probe]

Here is the photo again. The chip down left from F7002 in case it doesn't upload.

[pasdebip]

Hi, this is not the photo of my console visually everything is ok no fried fuse .....

[slinkygn]

A "fried fuse" isn't always visible. Also, how do you know the MOSFETs are fine? I'm curious as to how you tested.

As for the caps you've circled as shorted: I'm guessing you tested in-circuit, right? Those aren't all shorts. (You may already know this, but I don't want to presume knowledge.) If you pull them off the board and test most if not all will be fine. You're reading the same short over and over, because pretty much all those capacitors you circled are wired in parallel with one end tied to ground. So not much info there, unfortunately.

The chokes are a little more help -- you can check all the caps around them, both the beefy electrolytics and the tiny ceramics; any of those failing would show as a short on the chokes. But that's not likely to explain the cap shorts around the memory modules. It's not implausible to think that you may have fried something significant when you pumped 8A into VCore.

[pasdebip]

Hello,
The fuses have all been tested for continuity.
For the MOSFETs, I tested them first in D-S-G continuity mode, then in diode mode.
If I separate the MOSFETs from the load by disconnecting the coil, I no longer have a short circuit on the MOSFET side, hence my conclusion, but maybe I'm making a mistake in my troubleshooting.
Everything is shorted on the RAMs. The test method points to ground. The ceramics are ringing on both sides at 0.00 ohms.
There's a problem with the RAM side. I also injected 0.8V, but nothing lit up. I don't remember the current. I'll have to retest if the method is correct for you...

So, on the Vcore, after the coils, I injected 0.8V to see if a capacitor or hot spot lit up on the thermal camera.

By injecting 0.8V, I told myself I couldn't do any more harm, but I justified the 8A by the fact that it drew all the current without lighting anything on the camera except at 8A, where I had a bit of temperature, but nothing really conclusive...

Important information: I bought this PS5 on a sales site for €30. The cosmetic condition of the plates and plastic is quite poor, so for me, this is mainly an "educational" repair given the state of the machine.