820-00138-A with short on PPVIN_S5_HS_COMPUTING_ISNS

sekidata

Member
PPVIN_S5_HS_COMPUTING_ISNS is 2 Ohms to ground. Removed R7310, R7320, and R7330. Revealed short to ground on PPVCC_S0_CPU (2 Ohms). Any hope?
 

2informaticos

Administrator
Staff member
2 ohm is possibly normal value for VCORE; compare with similar board.
Your problem is one of U7310/20/30 chips is burnt.
Need to change all 3 with FDMF6708N from reliable source.
FDMF3030 was also reported on the forum as tested replacement.
 

2informaticos

Administrator
Staff member
Then CPU is dead, stop to waste the time with this board...

BTW, I didn't mention FDMF6808N.
That is Apple proprietary chip, NEVER sold to other!
Of course, you can throw the money buying "NEW" FDMF6808N from chinese sellers...
 
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