Question about Sharp Microwave Ovens

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Hi my sharp microwave model R888C(G) is not heating food all other function such as grill and convection is working. thanx

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Replaced the magnetron with the diode.

Posted on Aug 03, 2008

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The control panel of my sharp grill 2 convection microwave oven is very dim


Hi,
Dimmed light might be caused by a slight contact between the panel's connector and the mainboard. Or, there is a dimmer option (feature) in the menu. Depends on model. Some of Panasonic microwave ovens are equipped with such a feature.
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Hai my friend, if its not heating you must open it at the back and check your fuse on top for contuinity using amultimeter it must be on abuzzer and if its fine there is other fuse covered with normal black cover connected to the cspacitor also check it, if this two fuses are fine check your capacitor if its fine check your magnetron for contunuity of 0,2 ohms but normal if its not heating its fuse, thx

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After many years of good service my Dimension 4 does not microwave. It goes through all the motions but doens not heat the food. the convection and grill functions are working fine. HELP!


Hi Michael,

i think something wrong with its high-tension circuit or your magnitron is bad.
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or burnt fuse in circuit.

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I need instructions on how to use Sharp Convection microwave Grill 2?


Best way short of Sharp is Google the model number of the unit with "manual" to try to locate free one online.

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The food in the microwave is not heating up I have tested the fuse (F8AH250V) and found that it has blown. Is it safe to replace this fuse (F8AH250V) on my microwave.


Fuses seldom just go bad on their own, but it's safe to replace. Before you replace the fuse, squeeze the tabs of the fuse holder clips together a bit. Sometimes they don't grip the fuse tightly enough, and this can cause heating which damages the fuse. If the fuse blows again there is a bad part in the oven that will need to be located and replaced. For a small countertop oven, it's probably more economical just to replace the oven than to repair it.

Jan 02, 2011 | Sharp Microwave Oven Microwave Oven

1 Answer

On microwave mode the oven makes light buzzing noise and does not heat food. Convection oven and grill functions work perfectly. michaelchrys@yahoo.com


The magnetron (the part that heats the food) may be bad or the circuitry to the magnetron may have burned out. Basically my advice is that if you have no electrical expertise, it isn't worth fixing. The magnetron if bad, costs almost as much as a new microwave. If you open it up (make sure it has been unplugged for a few hours and don't seen any obvious burnt parts (including a fuse and the diodes), then most likely the magnetron is done and a new microwave is the way to go.

Let me know how this works out for you.

Benjamin

Aug 17, 2010 | Panasonic NN-A811A Convection/Microwave...

1 Answer

3 year old unit, oven works, microwave does not


hi,

You may need a new magnetron, contact sharp or the store you got it from; most microwaves have a 3-5 year warranty on the magnetron. If it's not in warranty, find a good appliance repairman, this is a difficult and dangerous repair job.

Apr 03, 2008 | Microwave Ovens

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