My Macbook 1707 PMIC got hot. Removed the chip and the fifth pad from the bottom left (PP5V_S4) was burned. After carefully scraping the pad to expose some copper it shows a 0.3 ohm short. I know this is a complex issue but what is the best way to deal with this? Where is the trace to this pad is also not clear. Is it fair to assume we need to scrape away the ground plane around this pad? If so, which layer is ground: is it top or second layer?. If it's not the best way to deal with this, what do you recommend ?
Thanks for your guidance.
Thanks for your guidance.
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