Macbook Pro 15" 820-3330b no power no green or orange light

larossmann

Administrator
Staff member
I find it common for IRF9395TRPBF to blow on this. It will cause the charger to see no load and as a result output no voltage.

1) What is PPDCIN_G3H?
2) What voltage is on pin 1 and 2 of R6990 with charger plugged in?
3) What voltage is on pin 2 and 3 of D6990 with charger plugged in?
4) IF voltage is high on pin 2 of D6990 but low on pin 3 of D6990, what is the resistance to ground on pin 3 of D6990? Make this measurement without power plugged in.
5) IF voltage is low on PPDCIN_G3H, around 0.2v, is there a short circuit to ground on PPDCIN_G3H? If not, replace IRF9395TRPBF/Q7080.
 
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