No power sharp xr-10s... just died during a movie. No warnings. Will not power up, no lights. Dead as a nail. Would is at least power-up if bulb was dead?

There are six screws in the base and two in the back of the unit. After taking off the top I saw a red button on the front that was a little pushed out - I pushed it in and I got the led lights back :)

I had the same thing happen to me, projector went completely dead while watching a movie.
there is a tiny red reset button/switch in front center of unit left of the lens. once i pressed it the projector worked fine again.
its hard to get to, i sort of pried the silver casing upward without taking it completely off, wasnt able to take it off all together, but randomly saw that reset switch while trying to lift of the silver top from front after removing all screws form bottom of unit.

Yes it would power up if the bulb was dead, but it may have a blown fuse, see if there is a removable fue on the back near the power cor, if so replace the fuse