820-00928 Charges On All Ports, Turn On But No USB On Left Ports

brunomotter

Member
Hello. Got this board here. It turns on, charges battery, works perfectly except for left USB ports. They can charge battery via USB-C but no USB devices get detected on them, not even get power from USB on USB mouse or any other device. The board had corrosion near U3500/5850/3906 which I cleaned and verified traces and components surrounding, but still same behavior. Where can I start?
 
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