Hello guys. This board came to me with no PPBUS_G3H initially. Turned out to be a shorted cap C7121. Replaced it, board worked again. I put it on UC to clean all the dirt as it had some green points. After UC the board does not turn on anymore. I noticed that SMC_BC_ACOK is a little unstable, varying quickly from 3.1V to 3.4V. Tried replacing U7000 and rebelling SMC, still the same. What else can I check?