THis came in customer said suddenly died. Started, no boot. NO signs of liquid damage. COuldr read ROM but couldn't write to ROM with MEdusa so replaced U6100 and reprogrammed with new BIOS clean ME. Realized board booted with heat to PCH so reflowed with flux. Board now boots consistently but no wifi. Tried PRAM resets and replacing wifi card with couple other and pram/smc Resets and no change. THere is no card detected in system info.
Placed original BIOS w/ Clean ME to see if any difference. No change.
No signs of issues around U3540 but replaced.
Readings at U3540:
1- 3.3V
2 - 1V
3- 3.3V
4 - 3.3V
5 - 0
6 - 3.45V
7 - 0
8 - 0
Thinking this is a PCH issue... any thoughts?
Placed original BIOS w/ Clean ME to see if any difference. No change.
No signs of issues around U3540 but replaced.
Readings at U3540:
1- 3.3V
2 - 1V
3- 3.3V
4 - 3.3V
5 - 0
6 - 3.45V
7 - 0
8 - 0
Thinking this is a PCH issue... any thoughts?
