Macbook Air 820-3435-B not turning on

Dannstarr

New member
Hi all, rather than me try to type out an explanation, I've done a short video to show what I've done and my sticking points... Please help
 

JohnB8812

New member
Is PPVRTC_G3H shorted to ground? If it is and you have removed U1900 and all of the caps on that line, the CPU is dead.
 

2informaticos

Administrator
Staff member
Please post voltages and/or resistance to ground on basic points.
I don't plan to watch the video any time I have to post a reply...

We need to "see" available data in a fast way.
 

Dannstarr

New member
Apologies, I felt it was a concise way to show you exactly what had been done

Basically, PPBUS_G3hot is 8.58V - so good
PP3V42 is good

The first point which falls down is PPVRTC_G3H. There's no voltage here, and with U1900, and the 4 other caps on the line all removed from the board, the resistance to GND is 0.4 Ohms
 
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