Question about Sharp R-1200 Microwave Oven

2 Answers

No Power & No Lights

I have power at my 110 outlet, disply not working, no power and no lights. Can this be a dead fuse inside?

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  • Mark Carchidi
    Mark Carchidi Mar 01, 2007

    20 amp fuse ok and there were no power surges. I was reheating some food and went to check it resttarted cooking time and nothing happened, it has no lights and the display is dead. Any ideas?

  • Mark Carchidi
    Mark Carchidi Mar 29, 2007

    Thanx MicrowaveSVC, it was the powerboard. I will keep you in my favorites!



2 Answers

Thanx, it was the power board! Will keep you in mind.........

Posted on Mar 19, 2007

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  • 9,098 Answers

It may be a bad fuse inside or it could be blown circuit protection on the control board caused by a power surge. The former you or a friend can fix, the latter we repair nationwide for only $39.95. We have free service manuals available for download on our site for the Sharp R370 and R630 models which are similar types. If you or a friend decide to work on it, we have *critical* safety and disassembly info at our site, which is linked at our listing here on FixYa:

Posted on Feb 28, 2007

  • William Miller
    William Miller Mar 01, 2007

    Sure. It may have a blown thermal fuse on the magnetron. If so, you can replace that.

    Also check the varistor on the power board. If it's bad, replace it.

    Lastly, check the fusible trace on the power board. If it's blown, then either install a wire jumper or an RF choke, whichever you prefer.

    The first one could be bad due to overheating.

    The last two could be blown due to a tiny surge you don't know about that may not have affected any other devices.

    It's all covered in the service manuals I mentioned.



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