That was pretty weird. 
Reminds me of a time I somehow moved the brighness on my 1084 all the way down so there was no visible picture. I had an A2000 at the time. I tore it all apart, PSU out, and everything. I cleaned it all up, reseated chips, tried different configs of cards. Always a blank screen.
When I noticed the knob was turned down I felt totally stupid. Had a nice clean A2000 though.
It is hard to remember to always check the simplest things first. I am guilty of similar stupid oversights myself from time to time.
