03-06-2012, 08:00 PM

Have a 4 year old MacBook Pro. Won't power up. Hit the power button, and absolutely nothing noticeable. I don't hear a hard drive click, see a screen flash, hear any other noticeable noise, etc.

Took the book apart, cleaned it out with some electrical circuit cleaner. Back together, nothing. Posts to apple's site, just yields.. might be logic board problem, have Apple fix. But, my experience is that they quickly go to that answer.. they (genius bar) told me that a few months ago about a MacBook I brought back up just by opening and cleaning it.

So.. what should I check to troubleshoot? Power button itself is suspect. I cleaned it directly, and no helps. Ideas?

Thanks!

03-07-2012, 05:45 AM

It's the logic board.

Read this.

MacBook Pro: Distorted video or no video issues

03-07-2012, 07:33 PM

Originally Posted by Shootist

It's the logic board.

Read this.

MacBook Pro: Distorted video or no video issues

Thanks for the link. But, hard for me to conclude it's just the graphics processor. I don't even get a hard drive rattle upon hitting the power up.

03-07-2012, 08:30 PM

Originally Posted by dingleberry

Thanks for the link. But, hard for me to conclude it's just the graphics processor. I don't even get a hard drive rattle upon hitting the power up.

Right, Once the graphic card goes it takes the rest of the mother/logic board with it. Some have bad video first, other don't. The system is just dead.

If your model is the late 2007 early 2008 series it is the NVidia GPU that has gone south.

Apple solders the CPU and GPU to the mother/logic board.

Now you want to hear the bad part. Apple has a 4 year warranty on it, "BUT" only if the system will start to a point they can get a failure code from it. No code = No free fix.

Good Luck.