SOURCE: Microwave oven r-1502(sharp)
I'll do that; I'm a bit surprised at how many people have the same problem; This is likely the last Sharp microwave oven that I will buy or recommend.
Thanks so much for your help.
SOURCE: R-4H84 Sharp Carousel II microwave oven stoped working
A microwave can be dead for many reasons.
The fuse is normally located on the floor of the chassis behind the control panel or between the door switches.
If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.
If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.
Then when it cools, it closes the circuit and allows power through again.
When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.
If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.
If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.
If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.
If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.
You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.
If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.
If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
We're happy to help and we appreciate your thoughtful rating of our answer.
SOURCE: Sharp Carousel Microwave Convection Oven
The
first thing I would suggest is a hard reset. Unplug the unit for a
minute or so. Then plug it back in, set the clock and try again.
If that doesn't work, leave it unplugged for maybe an hour.
Then let us know if the hard reset does not fix it.
You may have a bad keypad.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
SOURCE: sharp microwave oven model r-1850
Are you saying it's dead, with no display and no inside light when you open the door? And the fuse is good?
If so, you may have a bad magnetron temperature fuse. This device looks similar to the attached photo and is located near where the magnetron mounts.
You can usually find exploded views entering your model number at the Sears parts site.
The best place to order Sharp parts is Tritronics.
If you or someone you know
decide to look into it, we have critical safety information and
disassembly information at our site, and our link is at our listing here on FixYa.
At
our site, we have a video showing how to remove a typical
over the range control panel assembly in under 5 minutes.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
SOURCE: The number display on my Sharp R-515EK 1200 watts microwave oven
We
regularly repair these control / display units for customers nationwide by mail
for $39.95 postpaid in about a week or so with a one-year guarantee.
Feel free to contact me directly (and please remind me of your
full model number from the tag on the unit) for more
information & help.
We're
happy to help you with free advice and we'd appreciate your thoughtful
rating of our answer.
William E. Miller, AS-EET
[email protected]
http://www.microwavedisplay.com
Microwave Oven Control Panel Repair Nationwide
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