Sharp R-1850 - no power to anything?

My Sharp 1850 microwave convection over the range unit stopped cooking suddenly. No power to the light inside or outside, nor to the fan or digital clock. Circuit breaker is on and there is voltage at receptacle. Seems like a fuse is out somewhere in the unit. Read a similar post here suggesting replacement of a fuse located behind the control panel but on my unit can find no such fuse. I can't find a repair manual online either. Anyone have this problem and an answer?