I'm pretty sure that my logic board may be near failure and I'm taking it to the Apple store to confirm. I've read that logic boards are expensive to replace. I'm out of warranty on my mid-2006 MacBook Pro (15", 2 GHz Core Duo) so I was looking on eBay to see if there were any that were cheaper than what I read it would cost to replace through Apple (~$900). Do I need a specific logic board model or will any one work? Thanks for the help.