820-00293 short on PPBUS_G3H

ajdoc

Member
No liquid, no corrosion.
Only suspected area was D3370 and D3302 which had solder balls around.

20V and 0.02A from charger.
F3001 20V on both sides.

U3200 LDOs:
U3200/2 = 1.8V
U3200/12 = 3.37V
U3200/35 = 1.12V
U3200//75 = 1.8V

Found short on PPBUS_G3H.
Removed F7000 and short is on F7000/2 side.
Injected voltage wont heat any component on PPBUS_G3H.

Any idea?
 

2informaticos

Administrator
Staff member
"Injected voltage wont heat any component on PPBUS_G3H."
How many times we said on the forum, do NOT do that directly???

Did you compare short value with the values on big coils?
Very likely you've injected voltage into CPU...
 
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