MacBook Pro a1286 won't turn on, possibly water damaged.
My boss approached me and asked me to take a look at his wife's Macbook Pro 1286. The serial number identifies it as a mid 2009 model.
The computer had been having problems with it's old series mag safe connector. The connector sometimes displays no light, or a dim green light, rather than the normal bright green or amber lights.
Apparently, water was spilled "around" the laptop but not directly on, getting the bottom of the case wet. After this occurred the laptop would no longer turn on. It remains unresponsive if the power button is pressed.
I have reset the SMC and the pram, but this has had no visible effect. I reseated the ram, trying the computer without it, and with each stick in each slot. In all instances the computer remains unresponsive.
Opening the case, there was a small spot of corrosion on the board near the power plug for the rightmost fan (assuming that the board is positioned such that the fans are at the top of the board). I removed the board entirely and investigated, but found nothing else. I cleaned the board using rubbing alcohol and reinstalled it.
However, the computer remains dead to the world. I suspect that the motherboard is simply fried and needs to be replaced, however the earlier power issues make me cautious. Can any one recommend a way to rule out the dc in board or the power supply as sources for the issue if I don't have known good spares for those components? Alternatively, can anyone recommend a diagnostic or repair step that I might have missed?