PS5 EDM-033 Short on Rail near APU

PS5 Questions PS5
1

Hi everyone,

My EDM-033 is reporting the following errors over UART:

00 16.07.2026 21:24:02 80810001 Severe PowerSequence - Power Sequence Error - General Power Failure (Peripheral, GDDR6, APU, Data Line Short)
|-(OK 00000000 80810001 1B559DF8 FFFF0023 10000100 2141 0036 FFFF 1D00:81)
Click for TSB Information

01 16.07.2026 21:24:02 C00C0002 Severe VRM Controller Failure, Check Mosfet (6414A) Located Side-A, Below Sony Interactive Entertainment Inc. Check Infineon XDPE14286A 16 Phase PWM Controller - Located Side-A, Right of fuse 7001 - Single Beep, 1 second blue light, off.
|-(OK 00000000 C00C0002 1B559DF8 FFFF0023 10000100 2141 0036 FFFF 1D00:97)
Click for TSB Information

I measure 23 Ω to ground on pin 9 (SDA) of the XDPE14286A and 0 Ω to ground on pin 19 (VDDIO), as shown in picture 2.

I also measure 0 Ω to ground on a rail near the APU (red arrow in picture 1).

I removed the XDPE14286A, the inductor near that APU rail (marked with green squares), and the two capacitors (green arrows), but the rail still measures 0 Ω to ground.

Can anyone tell me where this rail goes and which components it supplies?

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2

I injected 1 V into the rail at around 2.5–2.9 A, and a hot spot appeared on the APU. It seems like the APU itself might be shorted. What do you think?

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3

“I think the APU is faulty, right?

4

If the APU lights up at a point on the edge, the edge is in most cases damaged/chipped. I guess game over.