8 Replies Latest reply: Aug 27, 2012 4:13 PM by BDAqua
Grant Lenahan Level 4 (1,210 points)

The symptoms are fans that always or often go to high when its not hot, and then the mac shuts down or becomes unresponsive.  When i got it ( fixing for a friend) it would power on but not boot up and the screen remained dark - often with the indicator light blinking.  Pressing the PMU seemed to help greatly, but symptoms have crept back....   Any pointers or ideas appreciated.