Thought it was my Logic Board... but not. What now?
Hi,
I came home from work (where my MBP was working just fine), got home and started it up (not from sleep), but got no startup chime, sleep LED was on and the optical drive was running, but nothing else. I did some research and found out about the Nvidia chip problems and the logic board problems.
So I bought a brand new LB, which has the revised 8600 GT chip, (and according to the seller, was tested in a mac before being sold) and installed it today. I followed all the directions to the "T" from this website (THANK HEAVENS you are here) but when I got everything back together and attempted the startup. It exhibits the same symtoms.
It COULD be another bad board, but I also remember vaguely reading something here where someone mentioned it could be a bad left I/O board.
Well, I am not sure. The power adapter plugs in and it lights up green when the battery is charged, but is that amber color when it is not. so - I know it is charging the battery. Could it still be a bad left i/o board?
Thanks a million!
Jerry
MBP 2.5 Ghz. 17inch (early 2008) A1621
4 GB RAM
OSX 10.5
4条评论
One more thing to add - after being "on" for an hour now, the area along the F-keys is warm (where it usually is when it was working fine before). I am not sure what is happening. I don't hear any fans (yet). I'll update this in an hour or so.
由 jerrywickham 完成的
It's been on for over three hours - still warm (almost hot to the touch where the F keys are. No fans. Hope to get an answer about the i/o board possibility soon. I'm in the middle of two BIG projects now and really need this to be working!
由 jerrywickham 完成的
One more thing: A few months ago - I remember it now. There was a slight electrical burning smell - no smoke or anything - coming from the left hand side of the computer - near where the power goes in. I don't know why I didn't think of that before.
由 jerrywickham 完成的
OK - this is disheartening.
I've replaced my Logic Board and the left i/o board. It is STILL exhibiting the same symptoms. I followed the instructions to the T, but it is still exhibiting the same symptoms. I just don't know enough about this to really be able to troubleshoot beyond what I've already done. No startup chime. solid LED sleep light. optical drive powers up, but pretty much that is it.
if I had bad fans, would it still pass the POST? For all I know this could be a bad wire or something - I just don't know what to do beyond this point. I cannot track and success or failures because there has been no change in the symptoms from replacing the LB or the i/o board. I am really stumped.
:(
由 jerrywickham 完成的