A1425 820-3642

[Instafixx]

No PPBUS
No PP3v42
PPDCIn is 16.5V

Some Green on C7036
Replaced.
R7001 also had green replaced. Diode Mode reading is okay.
But Didoe mode reading on this same line at C7000 is showing different diode reading.
This is resolved by replacing C7000.
But still NO PPBUS and NO PP3V42

 

[2informaticos]

Did you check diode mode at 3V42_G3H and PPBUS_G3h?

Post U6900 voltages.
Use adjacent components as test points.