While you wait for answers, we may have found some information which could help you.
Click here for About 10 Yearshow to fix microwave?
sharp R259 800w?
is it safe to replace a magnatron in a sharp convection oven ??
Sharp Microwave oven Model R-330J(S) keypad problem?
How can I fix my Sharp Carousel Microwave Oven?
My Sharp Carosel Model R-5A98 blows its internal 20 amp fuse. Any idea?