Hi, this board came in with clean visual inspection, ppbus is fluctuating from 14v down to 3.8v, i see that the resistance between 17/18 of isl is like 200Mohm, i have removed r7051 and r7052, and replaced it with jumper wire, just for troubleshooting purpose, there’s no corrosion and r7051 have continuity to the pin 17 and r7052 also have continuity to the pin 18 of isl, but the resistance is always a hundred Mohm, i even replaced the c7050 but still the same.. any idea? Isl been replaced 3 times still same
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820-3208 ppbus fluctuating
- Thread starter Yoel Ren
- Start date
Corroded traces...