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The piece of **** we own is pt# r-1500. In less than a year the lcd display shut down. Now the switch assembly has broken and we have been informed the entire control panel assembly is unavailable. Nice performance!

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Both parts are readily available - you can order them from Martin Microwave Inc.
(toll free 1-877-894-0035).

The lcd / control board / display is Sharp part # CPWBFB075MRU0 and it sells for $79.99

The button assembly is Sharp # JBTN-B122MRF0A and it sells for $13.99

You can also check with www.microwavedisplay.com for a rebuilt board

Posted on Sep 10, 2008

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If it's out of warranty, I'm sure you'll find it's uneconomical to repair, even if you could get parts for this brand.

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Sharp R-1750 shuts down.


The shutdown you're experiencing is separate from the control unit / display issue.

The shutdown is probably due to a a loose fuse holder, loose wiring, or a problem on the inverter board or the magnetron.

If the control unit doesn't receive the proper signals form the inverter, it will shut down the cooking process, but you say it acts like it's being unplugged - that makes me suspect a loose fuse or wiring.

Due to the lethal voltages used and produced, I do not recommend that an inexperienced person attempt to take readings on these inverters.

We actually have the service manual for this model and have uploaded it to our site here to help you.

You will need the free Acrobat Reader to view or print it in case you don't have it already.

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

The best place to order Sharp parts is Tritronics. You can also call them at 866-779-5835.

If you get the shutdown problem repaired, we'd be happy to repair your display problem for you.

We regularly repair these control units for customers nationwide by mail for $39.95 postpaid in about a week with a one-year guarantee.

Feel free to contact me directly (and please remind me of your full model number) 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
prototech@usa.net
http://www.microwavedisplay.com

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This is usually a bad door switch or door switch mount.

If it's less than one year old, it's under warranty and you should contact Frigidaire to get it fixed free.

If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and
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We appreciate your thoughtful rating of our answer.

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This is a problem with the control panel assembly, which we repair nationwide for $39.95. If you or a friend decide to disassemble it, we have *critical* safety, disassembly, and troubleshooting info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk

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I wiggled the ribbon cable between the control board and the intermediate circut board. The LCD came back for an instant. I am sure it is this ribbon cable. It looks like it is held on with adhesive. How can it be impossible to repair if people are offering to do it less than 40.00 dollars to fix it? Someone must be selling a replacement ribbon cable that will work.

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