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Member Since: Mar 01, 2009
Location: Minnesota, USA
Posts: 33
gsmithp is on a distinguished road
Mac Specs: MBP 5,5

gsmithp is offline
Diligence paid off. I decided to take the logic board out just to see if there was a stray screw lodged somewhere since some were missing. I was right about that IR board but didn't know why. There is supposed to be a grounding tab sticking up from the IR board mounting screw but it was missing just like two or three screws. When I took the infrared board off in order to remove the speaker harness I found the missing tab. It was mounted on the BOTTOM of the IR board wedged up against the back of the memory slots. That must have made that heat sink 'hot' and when the shielding touched it it shorted out & shut it down. Glad it didn't blow anything out. I'm starting to think this machine was tinkered with by a non techy type or was assembled in a hurry from parts. I found a $10 Apple teardown manual download which was a tremendous help. Anyway, it works fine now, didn't cost much and I'm tickled. Thanks again.
QUOTE Thanks