I trust my local shop 100% but how easy would it be for someone at the regional shop to take my working board, pull it, replace it with a bad one with the serial number wiped off of it and then have a good working board? I took my mid 2010 MBP to my local genius bar for its final servicing under apple care. It needed an optical drive, prom battery, rechargeable battery was starting to go and the magsafe needed to be wiggled which they said could be a logic. When I took it into the local shop it worked. The local shop did not have the needed parts so it was sent into the regional shop. The regional shop said the screen was cracked which voided the Applecare, quoted me $1,200 to fix it without telling me what they were going to fix. Anyhow when I got it back from the regional shop it was totally dead, not even the battery indicator worked. Opening it up to do a SMC reset and replace the rechargeable battery I noticed that the battery screws were kicking around in the case. I know that those screws were tight because I opened it up to replace my bigger hard drive with the original one before I sent it in. One of the hard drive protector plate screws was really loose too and the hard drive ribbon cable was folded over. I took it over to my store today to see if the serial numbers matched up and they said that the serial number on the board was missing and they could not access the electronic one because the board is dead. They did have the right numbered board when they electronically checked it when they were looking at it for repair and sending it off. Today the manager came out with the tec to work with me on this issue. I am going to send the board off to a third party to see if they can solder it to fix it and hopefully the serial numbers will match if it wakes up. Did I just loose a good logic board to someone at Apple? How should I proceed?