I have this same problem with my Qualia. If there is a power failure or glitch that causes the projector to turn off, I need
to unplug it and wait ~24 hours and plug it back it. It will then power up until it happens again. Kind of a pain in the
Something in the power supply for sure.
That I why I bought a spare unit a while back, but so far the hassle of unplugging and waiting every few months is
less of a challenge than swapping units.
I may look into a UPS for the Qualia, so I'd recommend considering that route.
Overall, the Qualia has served me well since 2004, and I don't think there is anything much better out there yet, at
least for my rear projection setup.