Post originale di: Reece ,
With the I/O cable plugged in (make sure it is the right way) the charger light should go green, then orange. If it does, the charging circuit on the I/O board is fine. Remove the whole board and check the bottom for liquid damage; it may be coincidental liquid was sitting on the board for a while and has only started causing an issue now. Unplug everything apart from the fan and I/O board, and plug in the charger. If it doesn't automatically boot, you have a logic board issue; something like this would be difficult to diagnose over the internet. If you have microsoldering experience, I can guide you with what to check, but otherwise I would recommend sending it somewhere.