Top 20
Sharp R-1480 Microwave Oven Questions & Answers
Boiling water caused large "Pop" sound/microwave not working now
I would guess that the boiling water may not have been the cause ...
If you are lucky ... try this first:
Unplug or turn the circuit breaker off (if it is a built in unit). Wait an hour and then repower.
Odds are that will not clear things up ... but it is easy to try. Probably one of the electronic internals broke.
A number of different internal component problems could cause this heating failure in the microwave. It could be the magnetron, the high voltage transformer, the PC board, the diode, and the capacitor. This type of problem will need to be diagnosed and repaired by a service technician. Microwaves are inherently dangerous to service. This type of repair is not something that you want to try to do yourself. Internal capacitors in the microwave can retain a lethal electrical charge even when the microwave is completely unplugged. A microwave radiation leakage test should be performed on the unit using proper testing equipment following any internal component repair.
Microwave is in Lock -- how do I unlock it?
" 1. CHILD LOCK
The Child Lock prevents unwanted oven operation
such as by small children. The oven can be set so
that the control panel is deactivated or locked. To
set, touch Custom Help, the number 1 and Start/
Touch On. Should a pad be touched, LOCK .
.. ON will appear in the display.
To cancel, touch Custom Help and Stop/Clear. "
Also, to find manuals........
Sharp Carousel Microwave door won't open, button broke
Take it to a Discount Appliance or Used Appliance store and have them repair it. There they will have the parts that are used and cheaper to repair than hiring an Appliance Service Technician.
Option 2
Take the microwave apart and go to www.searpartsdirect.com and type in your model number and find the broken part and part number. Then order the part through ApplianceZone.com or ApliancePartsPro.com. Later when parts arrive at your door... install theparts yourself and save money!
The bulbs under the microwave for the work space do not work.
On a sharp R-1480, they use a solid state IC on the control board to switch the night/work lights on and off. These IC's can burn up and quit working, or short out and not turn the lights off. I replaced several of these boards close to twenty years ago but I never saw one that was anywhere near close to being a fire hazard. I'm sure that these boards are no longer available.....
Hot
Take the unit out of the case.Posibly the OEM heat shroud missing.Can always lay a piece of silver insulation sheet on the top before putting back into case.
My Sharp Carosel volume got really quiet. Is there an easy fix?
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
Lost all power
Door switch is bad or a fuse blew out inside the microwave cover housing. Switch is most common.
Not working
Some of your story seems impossible. Closed doors do not cause anything. Aging capacitors can cause fuses to go. They also stabilize the magnetron. My bet is the capacitor blew. I have no idea why the fan doesn't work, once the cabinet is open it will become obvious.
Sharp KB-5121K won't heat -- everything else
It may be the fuse supplying the magnetron, or the magnetron itself which has failed. Another suspect is the high voltage capacitor in this circuit.Don't try to fix this yourself as the internals of a microwave are dangerous, with high voltages even when unplugged.
Lights don't work
test the following steps and fix it.use the VOM
God bless you1. No power to outlet (overload or fault in microwave or other appliance).
2. Blown main fuse - likely due to other problems.
3. Open thermal protector or thermal fuse.
4. Defective controller or its power supply.
5. Clock needs to be set before other functions will operate (some models).
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