It's a bit funny reading this thread but very relevant. Last night I went to use the 990 remote to perform a function I didn't program into my universal remote. It had been awhile since I used it and it wouldn't work. I changed batteries, tried everything I could (including the old "whack" solution, hitting it against my hand) and nothing would get it to work. I pulled out the manual and then realized I hadn't hit the TNR button, somehow another component had been pushed without my realizing it. Glad no one was around to witness my situation.