bjf
Member
I have an 820-3115 board that had a destroyed ISL6259. Liquid-damage. I've run a number of wires to repair the charging-sense lines. Replaced U7000, U7085, U7080, Q7030 and all charging-sense resistors. The main 18.5V DC line cycles up and down from 1.8V up to an unknown number. No magsafe light. No known shorts. I've been digging through the Inrush Limiter and Reverse-Current Protection circuits looking for bad components or lines but can't find anything. Any ideas where to go next?