A1990 820-01827-A 19v but missing VBUS on U3200..

[lagadatorumea]

Hi Gents!

Water damage A1990, 820-01827-A

1. Stuck at 5v.
2. Short on PPBUS_G3H. The problem was U7220 (CPU PHASE IC 2) changed the IC.
3. U3200 outputs: LDO3_3, LDO1_8A
4. Now I have 20v and stuck on 0.052 AMP, but missing VBUS (U3200) shows 0v... How is that possible?

Thanks

 

[2informaticos]

Hopeless project, most likely dead CPU; overvoltage through U7220.

VBUS appears only at one port; depends where you connect the charger.

 

[lagadatorumea]

I see.. ok.. Yes, might be the CPU.... it took ages to change out the U7220... the whole board was bloody hot.. could be when I did the change.. unless it was shorted as you said.. will double-check and revert back. thanks master

 

[lagadatorumea]

Hopeless project, most likely dead CPU; overvoltage through U7220.

VBUS appears only at one port; depends where you connect the charger.

Yes, CPU badly shorted... after double checking...

Thanks, Master... Case closed!