PS5 EDM-040 no boot DA9065 defect

[dahan]

Hello,This is my first post on Bgatemp.
From time to time I buy PS5s for parts; as an amateur, I’m learning as I go.
Today I’m stuck with this board for a PS5 Slim EDM-040.There’s no sign of life – it’s a console that’s already been taken apart.
During my diagnostic checks, I found a short circuit on pins 31–32 (line 1.15v) of the DA9065 PMIC.
Before replacing the PMIC, there is no longer a short circuit.
I replace it, then apply 12V from my laboratory power supply to the main 12V rail; at the same time, I use a thermal camera to monitor the PMIC’s response and observe the 1.15V line went dead immediately .
As a test, I remove the two capacitors connected in parallel on line 32 on this board (three are shown on the EDM-020 schematic, which I have circle Just to be clear, they’ve got no worries).
And in this case, the PMIC does not burn out, but I am missing some voltages
I’m also missing some voltage readings – here are my measurements :
1 - GND
2 - 5V
3 - 5V
4 - 0v ?
5 - 0v ?
6 - 1.8v
7 - 0v
8 - 0v
9 - 1.98v
10 - 5v
11 - 2 v
12 - GND
13 - 0V ?
14 - 3.25v
15 - 3.25v
16 - 5V
17 - 3.3v
18 - 0v ?
19 - 3.3V
20 - 3.3v
21 - 3.3V
22 - 5v
23 - 5v
24 - GND
25 - 3.3v
26 - 3.3v
27 - NC
28 - 5v
29 - 2.3v
30 - NV
31 - 0v ?
32 - 0v ?
I don’t understand why the 1.15V always burns out when I replace the DA9065 with the two capacitors....

photo taken after the second PMIC replacement

 

[dahan]

Hello,Well,
I’ve made some progress on this console.
As I no longer had any DA9065s, I replaced them with RT5126s...
By removing the Southbridge and re-soldering two new capacitors (C7032 and C7035 on the EDM-20), I’ve restored the LX and Vout1 voltages.
Strange, as there’s no short circuit on the southbridge
After replacing the Southbridge, everything’s working again.
The PS5 is fine.
That’s it for me!