tcampbell34
Member
I got a 820-00239 that was pretty badly liquid damaged but was showing 20v 0.6a and the fans spin high but was not booting. When I opened the case, the back cover was covered in dried liquid and the black coating on the heat sink was completely burnt off by the CPU area, so it looks like this board seriously over heated at some point. The board itself was sticky but did not have much corrosion on it. There was some minor corrosion around the keyboard connector that I cleaned with alcohol. I also replaced the dried thermal paste on the CPU and put another heat sink on it. The board now boots to the OS but the fans still spin high and the battery is not being recognized or charged. Sometimes when I would plug it in, the fans would not spin high, but then it would come back if I rebooted. Sometimes only the left fan spins high while the right fan reacts normal, other times the right fan spins high and the left fan is normal. The battery is either not recognized at all, or sometimes it does see the battery and says that its charging, but it will not charge. I have left it for over an hour and the battery percentage stays the same and it also turns off if you unplug the charger. I tried putting the board in another top case that was working with another board I had, and this time it only shows 5v on the charger and keeps boot looping. It figured out it only does this when the battery data cable is plugged in. If i leave the battery tab screwed down and just un-plug the small data cable, it will boot with high fan spin still. I have tried new trackpad cables, replaced both fan controls (Q6000/50) and I also replaced the SMC with no change. I have ran HWmonitor and all temps are normal except airport proximity which is at 129 degrees but I think this is normal. Not sure what to look at next.
