I have a TV in my cabinet, and sometimes I want to turn it off while I do maintenance from my main PC.
The remote won't work through the plexi?  I've changed the batteries.  
My plexi is screwed on, so it would be a pain to test the remote without it. 
The only other thing I can think of is the remote doesn't work at all.  It's brand new like the TV.
Huh?
Art