If it is still under guarantee and you have the receipt take it back to the supplier.
SOURCE: Sharp R-9H66C Microwave Convection blowing fuses
check high voltage transformer and high voltage diodes, condencer, and magnetron.,
SOURCE: Microwave convection oven repair needed
Check the internal fuse. Unplug it, unscrew and take off the cover, the fuse should be easily found in the back by the power cord. I tlooks like a regular fuse but is white instead of clear glass because microwave fuses are special. You'll have to measure it with a meter as a result and be sure to replace it with the same kind. (try finding them at radio shack) Hopefully there isn't something more serious also.
SOURCE: Sharp 1870 just quit cooking and no turntable
The fact that the microwave and convection both do not heat indicated that the oven is in demo mode, check the user manual, otherwise it will possibly be a relay not triggering, may need a pcb replacement, check Demo mode 1st....Phil
SOURCE: Looking for instruction manual Sharp \carousel
if you google the model number and the brand you should be listed with a series of sites that supply manuals, service manuals, etc.
SOURCE: Sharp model R-1871 shuts off every 59 seconds
This
is a problem in one of the damper-related components, either the switch
or motor or the damper door may be binding.
The
damper is a door inside that opens or closes depending on cooking mode.
If the controller senses that the door is not in the right position, it
will shut down the cook cycle.
Sharp models stop after
59 seconds.
See the attached sample
drawing for a typical damper assembly.
We have the applicable
service manuals for these models and have uploaded it to our site here and here to help you.
If a switch is all you
need, we offer a universal type for only $5 postpaid which you can
order here.
We're
happy to help you with free advice and we'd appreciate your
thoughtful rating of our answer.
William E. Miller
[email protected]
http://www.microwavedisplay.com
Testimonial: "traced to motor for damper. Would not have had a clue without this information provided by fixya"
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