I had the dash TV cabinet half way up and started the engine. I hit the 'down' switch and nothing happened. I turned the ignition off and removed the key and tried again. It still would not lower or raise. Did I blow a fuse when I tried to activate the cabinet with the key on/engine running or did I damage something expensive?

I'll be checking the fuse tomorrow morning.
We're hoping to take our first trip with this MH next week so I hope I'm not driving with a TV cabinet sticking half way up in the center of the windshield.
Thanks for any help or suggestions on this problem.
Dustdevil