Hi, I need some advice. I am looking at a dead wallsteet for purchase. The owner says it the problem lies in the PMU or the sound/ac board. What's wrong with the unit?
The PMU broke. The machine booted (to OS X) for about a week. I tried to turn it on one day and it wouldn't, it exhibited the same symptoms as before I had replaced the PMU. If you hook everything up internally, it will sometimes do a PMU reset (where the fan turns on and the screen flashes) when you press that key combination.