Question about Microwave Ovens

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My Sharp microwave oven Model R-320-E display panel is dark. Does not show time or any other information.

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  • Mike H Apr 25, 2009

    The display also just went out on our microwave. No warning - worked well for years. All LED segments are out...any assistance would be appreciated.

  • Anonymous May 03, 2009

    Sharp Model R-320E display is out. It still cooks if you can remember how to program with no display. It is 7 years old.

  • Anonymous May 21, 2009

    Display has quit working. It's not completely dark, but only bits and pieces of the display illuminate so it's unreadable.

  • Eva Lovhoiden Jun 14, 2013

    The display also went out on my microwave. It still cooks and does what I remember to do without the display. Any help or some display light?

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Sorry the cost to replace the display will be more than buying a new microwave. $145.00

Posted on Jan 17, 2010

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Sharp R-9H84B-display black, cleared display shows "Conv Mix, 88:88 Auto". Short time all dark again. Hit clear happen 2 times then, all dark, no power, can't clear won't start, nothing works.


R-9H84B - May 29, 2017

I would suggest pulling the control board out and looking on the foil side (opposite the component side) for "ring cracks," most likely on the low voltage transformer's connections.

The board may have the screen-printed reference designator "T1" near the low voltage transformer.


ring_cracks-gr02aocewnccyez3v1hdhepo-1-0.jpg

Also be sure the fuse is not easy to turn with your fingertips when it is in the holder. If it is, the fuse holder is too loose and must be replaced (not just squeezed with pliers).

You can order a fuse holder, part number WB06X10034 for $6.49 (subject to change) from the Pros here.

If you have any keypad issues, please note that the membrane keypads for this model have long been discontinued.

FixYa does not directly notify us experts of responses, so if you have other questions, please contact me directly.

- William E. Miller, AS-EET
pupista@gmail.com
http://www.microwavecontrol.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

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I have sharp microwave oven model R-231F. On digital display (which is suppose to show time) only 88888 is displayed. suspect fault with the PCB behind display or keypad. Please advise how I can obtain...


First I would suggest a "hard reset". Simply unplug the oven for a minute or two, then try again.

If it still fails, it may be that the keypad has failed, or there is a bad connection due to moisture, grease, etc.

This is an Australian model, so it's hard for me to give more specific information.

But one some US models the LCD and keypad connect to the circuit board via a rubber "zebra strip" and losing that connection can result in a loss of display segments and / or key response.

I've attached a diagram showing where one can clean to restore operation in this case.

a98b491.jpg

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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We regularly repair these display / control units nationwide by mail for $39.95 postpaid with a one year guarantee.

At our Web site, you can get details of our service, plus we have a video available 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.

William E. Miller, AS-EET
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We regularly repair such control units for customers nationwide for $39.95 with a one-year guarantee.

mini_manual_behind_grille_small.jpgAt our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

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
prototech@usa.net
http://www.microwavedisplay.com
Microwave Oven Control Panel Repair Nationwide

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We regularly repair such control units for customers nationwide for $39.95 with a one-year guarantee.

The service manual is here.

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
prototech@usa.net
http://www.microwavedisplay.com
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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.

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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.

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prototech@usa.net
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You can usually find exploded views entering your model number at the Sears parts site.

The best place to order Sharp parts is Tritronics.

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We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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