820-3332-A

LCDR2

Member
Computer appears to start, then trips out.

Bench PSU shows draw from .25ma to approx 1amp after 1 second. which then resets and starts again.

Client says it sometimes turns on normally.

Some kind of over voltage protection or a shorted component tripping a circuit?

Not sure where to start with this one :)

820-3332-a
 

2informaticos

Administrator
Staff member
Resolder all U8900 pads with leaded solder first.
Is a "must do" anyway on this board.

Check if starts in SMC bypass mode.
Be sure to use original 85W charger.
 
Top