820-3476

MDY

New member
This board had several componentes burnt like: F7005, R7010 that I didnot replace at this moment I just remove it. U7000 and U7001 and SMC replaced.

After that now I have ppbus stable at 12.59V and 3V42 stable and all rails appear and cpu core too for 0.1 seg but not pulsing later.

Customer told that happend after connecting the ac adapter some way.
 

MDY

New member
On both cpu coils I have 42ohm

Also I realized now that green light appears 9 seg later after I plug the magsafe adapter. Thoese 9 seg it has no magsafe.

I bridge F7005 to R7020 to test and now magsafe appear instantly but stil same problem. All rails appear for 0.2 seg only and later not pulsing anymore.
 
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