How do I troubleshoot Logic Board?
Here is a brief history of my issue: One day after moving my laptop to a remote recording location, I returned home to find it unable to boot. The front LED would turn on, the drive would sound like it was booting and then it would turn off. When holding the button in, the light would blink for a few seconds. I took it to the Apple Store. They said it was probably the logic board. I asked why it would decide to just fail completely out of nowhere. He had no answer. I came home that night... tried to boot again for fun... and funny thing, it booted perfectly. Few weeks later the same issue happend. Kept trying it and it worked. Eventually it stopped.
There is no logical explanation for my logic board to fail. I'm able to charge my battery and get a solid green light on my adapter. I've tried reseating the RAM, PRAM, SMC, etc. etc.
I found "lemerise"'s very helpful tips about jumping the power pads to troubleshoot the top case. I removed the airport card, hard drive, optical drive and data cable and tried this. When I plugged in the power, the light was very very faint green. When I jumped the power pads it started blinking green and amber. I'm just curious as to what this means and where to go next? Why do I get a solid green light when the case is on but not when its removed? Any advice short of "take it to teh apple store lol buy apple care" would be greatly appreciated.
Is this a good question?