Craftsman Garage Door Opener Kaput?

Hi gang. I've been having range issues with my opener (can only seem to open it when in the driveway). Well, last night I decided to pop the circuit board off real quick (without disconnecting any leads to it) just to see that the antenna had a good connection to it. I didn't unplug the unit (I guess a big mistake) but screwed the board back in and now the motor unit won't power up. I swear I was extra careful not to fry anything so it seems really strange that this happened. I made sure the outlet itself has power. Any ideas on whether I can just get a new logic board or may it not be that at all? The model number of the unit is: 139.53985