Everything else on the microwave works except its very quiet.
If you are referring to the beep when you press any function,the beeper on the board may have failed.
The two other sounds are :i. there is a fan that comes on when start is pressed and, ii. the other sound is a heavy hum also when start is pressed.This comes from the transformer and maybe the magnetron tube. If you are not getting these sounds then troubleshoot these areas,careful though, the output voltage from the transformer is about 1.5kv
SOURCE: Sharp 1100 w Microwave Model R-420BK - Clock display not working correctly
This is a problem with the control panel assembly, and we repair these for customers nationwide with our guaranteed $39.95 service.
Feel free to contact me directly.
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
SOURCE: Sharp microwave
This
is usually caused by either a bad door switch, a loose door switch
mount (which are pretty simple problems to fix) or occasionally a
problem on the control panel.
Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.
Door switch
or mount trouble can be caused by slamming the door or by opening the
door while it's cooking without hitting the Stop pad first.
There are
plastic mounts inside the microwave which hold the door switches and
onto which the door latches lock when you close the door.
The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.
Sometimes it's
a broken tab on the switch holder, allowing the switch to rotate just
out of position. This tab can be hard to see, since it is under the
bottom edge of the switch.
One test that sometimes helps is to
gently lift up (and/or push down) on the door or handle as you try to
start it. If it works or tries to work, then it's a door switch mount or
door alignment issue.
If you or someone you know decide to look
into it, we have critical information on safety, disassembly and door
switches at our site, and our link is at our listing here on FixYa:.
You can usually find exploded views and order parts by entering your model number here at the Sears parts site.
If you only need a switch, you can order part # QSW-MA085WRE0 from Tritronics.
If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
SOURCE: sharp carousel microwave doesn't spin
The turntable system consists of the motor, the coupler, the turntable support with rollers, and the tray.
You can see and hear a video of how a turntable motor should sound when you rotate it by hand.
If
yours is not set to be off via the control panel, and it won't rotate
or it sounds like it's grinding, etc., you may have a bad motor or
plastic coupler.
To
replace either, you need to unplug power, then remove the bottom cover
of the oven. In some brands, you have to cut the motor cover off with snips, then use a
screw when reassembling it.
The best place to order Sharp parts is Tritronics. You can also call them at 866-779-5835
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
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: Sharp r-1481 950 Watt microwave oven problen
Found the answer by calling a Sharp technician and they said it was the magnetron tube, which is not worth fixing :( Thought I'd pass this on to anyone that has yet to find out.
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