Well, I guess to start the 990 isn't near a plasma tv because I don't own any plasmas, I have a 55" Vizio LED based LCD on top of the cabinet housing the 990. As far as fluorescent lights, I do use a few CFL's in my house but the closest one would be in a lamp about 16' from the 990. As far as the rear panel IR ports nothing is plugged into them but I do have my power amps plugged into the dc trigger port which is next to them. Oddly enough I did have a different problem where one of the amps didn't come on from the trigger, however, the other one did and they're hooked inline to the same wire so not sure if it has any relation. Now that I realize the 990 has an IR port I was wondering if might make sense to go out and get an IR receiver and just try using that over the 990's internal IR sensor? Anyways, thanks for the ideas and I'll drop outlaw an email and see if they have suggestions since as you said it may be a hardware issue.

Rob