820-00045 from hell

Melamanti

New member
Good evening people,
I have received not 1 but 2 820-00045 with the same issue but not with the same problem.

One of them power cycles, and the other one does nothing.
Pp5v_s5 goes up and down on the one that cycles, and on the other one is 0v.
no shorts on any rail.
Any suggestions?
 

JohnB8812

New member
Probably dead CPU like every other 12" MacBook. If customer needs data, reflow/reball CPU is a good option. If no data needed, then trash.
 

2informaticos

Administrator
Staff member
Probably hopeless project.
Check for short on big coils, try to start in SMC bypass mode.
Compare diode mode readings on the power rails between both boards.
 
Top