820-3476 no power

[Kyle93]

Arrived with no liquid damage. All power rails are present but P1V05S0_PGOOD is only 0.104V and PPVCC_S0_CPU only 0.47V

Both enables except P1V05S3_EN are present for U7600, no changes after replacing it.

What should be checked next??

 

[2informaticos]

Exact C7649 voltage?
Diode mode to ground?

Check/replace R/C7630 and R7631.

 

[Kyle93]

C7649 1.055v 0.090 diode

Replaced R/C7630 and R7631

no change

 

[2informaticos]

Remove R8164 and test the board.

 

[Kyle93]

no changes with R8164 removed

 

[2informaticos]

Actual ALL_SYS_PWRGD level?

 

[Kyle93]

0.105V

 

[2informaticos]

PM_SLP_S3_BUF_L stays high?
If yes, remove Q8150 and test the board again.