Xiaomi USB board repair failed
I've had an old Xiaomi Redmi Note 9S that had taken in water damage from the bottom side type c port. Phone was charging but without Quick Charge since USB data lines had failed, data transfer was also not possible. I've ordered an new bottom pcb replacement board that has the usb port, microphone, aux port etc.. Successfully replaced the board and the cable, but it didn't fix the issue. I can charge at 5V but the data lines not working. What else could be the problem?
Only the bottom side had slightl water damage with 1-2 rusted screws, top side and most of bottom side was perfectly clean.