Got a MacBook Pro 15" A1990 with a board issue, The board turns on, I did a DFU revive to see if it needed a firmware patch, that was successful, however the board just keeps boot looping and turning off and on very quickly. Obviously the DATA Is there, but it wont even launch into recovery, it will just die and turn back on with Apple logo, once it gets really hot it dies, if the laptop sits for the day and is cool, it will turn on then get hot within 1 min then die and turn itself on and repeat. Once it does that it turns itself on and off repeatedly in seconds. I put a thermal camera on the board to see if any chips are getting really hot. I noticed that UA600 chip gets really hot and hits about 130 degrees. This seems a little steep. I see that is a POWER CONTROLLER IC Chip so im assuming possibly this could be the issue but there are a few other power chips getting hot as well. Any suggestions would be great. Thanks in advance.