Question about Sharp R-1750 Microwave Oven

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Display panel has lost most of its dots. can't read it

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  • William Miller
    William Miller Oct 10, 2010

    We have many free Dacor and Sharp service manuals at MicrowaveDisplay.com. What is your oven's brand and model number?

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Remove the control panel and remove the display, now clean and solder the contacts and set back. If the program settings are good and responding then the display can be faulty. possible that insect have got in and soiled.

Posted on Oct 05, 2010

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  • Contributor
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Debe ser revisada por un tecnico por que parese ser la targeta de control da?ado por incectos o por cucarachas

Posted on Oct 05, 2010

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1 Answer

How do I set the clock on my sanyo microwave


Usually, if there is a Time/Clock button on the panel, pushing it once blanks the display for timer input while pushing it twice makes the colon blink (the two dots) meaning it's expecting the time input. So, for 12:37 you would push Time-Time-1-2-3-7-Time.

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can you see any thing like a circuit in that pannel.check for the soldering joints in that pannel.

Oct 12, 2008 | Dacor DCM24 Convection/Microwave Oven

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Display window dim


I would open it up and look at the connections to see if any can be replaced. Look for any darkened or burned looking connectors related to the display panel. Hopefully you won't need to replace the display panel circuit board but if you do. I would look for the cheapest replacement starting with ebay parts, and search engines for that specific part. Sometimes there are microwaves of different models with the same parts too!

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We lost power several times last night during hurricane Irene. The power has been on for several hours now and I noticed the freezer LED display is reading "88" and the fridge display is...


If you don't want to roll the unit out, then turn the circuit breaker off in the panel. The quick disconnect does not reset the electronics for the compressor. Try that and see what happens.

Aug 28, 2011 | Microwave Ovens

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Display panel (right side) on Kitchen Aid microwave reads "Lost Communications Err F6EO." The microwave does not work but the oven below the microwave does. The panel on the left side displays the clock...


The first thing I would do is a hard reset (simply unplugging it for a couple of minutes) if that has not been done already.

Then one would need to retrieve the technical sheet (mini-manual) found behind the control panel assembly.

If you don't find your mini-manual, or if you want to look at it before removing the controller, you can download it here. Just enter your model number from the tag on your unit.

If a reset won't fix it, I would bet there is a loose connection where one of the boards connects to another, or some contamination from grease or steam, etc., at one of those connectors.

A lot of time one can unplug then reconnect the connector, and that will clean it. Or one can unplug the connector and clean the contacts with a soft pencil eraser.

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

Sep 16, 2010 | KitchenAid Architect II KBHS109SSS...

1 Answer

My clock/timer has parts of the read out missing.


There are two options for this model:

- You can order our exclusive modified control unit with our proprietary upgrades for $115 (or less, depending on your model), then if you return your defective control unit in repairable, good cosmetic condition, we'll give you a core refund of $30-40. It comes with a one-year guarantee. For details, see: http://www.microwavedisplay.com/exchange.htm

- Or we can repair your existing control unit for $39.95 with a one year guarantee.
See http://www.microwavedisplay.com for details.

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

May 01, 2010 | Dacor DMT2420SS Microwave Oven

1 Answer

What does F4 on microwave display mean?


This Kenmore is made by LG for Whirlpool. Confused yet? :D

F4 means you have an open humidity sensor.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

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

To find helpful exploded view diagrams and get part numbers, you can just enter your full model number at the Sears parts site.

A full Sears/Kenmore model number has 3 digits, a dot, then 8 more digits, such as ###.########

But Sears parts can usually be obtained for far less here by entering either the part number.

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

Apr 22, 2010 | Kenmore Microwave Ovens

1 Answer

Dim control panel unable to read


Removed the amber glass which obscures the display enough to remove the wiring from view. This also allows you to see the characters much more clearly. You now can see the inidvidual light elements.
It's not too bad, people don't even notice, but they do notice you can now tell the time and see what the oven is doing.

Nov 10, 2008 | Frigidaire Microwave Ovens

1 Answer

Display is extremely dim to where you almost can't read it anymore


take down the display and clean the contacts if that does not work replace it.good luck.

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