Question about Sharp R-1490 Microwave Oven

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Digital display the digital display stopped working correctly and parts of the numbers do not show

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You would need a new VFD tube and we could replace this for you for about $75 total.

We're happy to help and we appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Posted on Jun 08, 2008

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Panasonic genius 1200w


You may have a failed keypad or moisture or grease on the keypad innards or on the control circuit board itself.
You can find a video here that shows you how to remove the grille & controller in about 5 minutes if it's an over the range model.
You can order Panasonic parts from Encompass here http://tinyurl.com/7qy85y or you can call them toll-free at 866-779-5835.

May 02, 2013 | Panasonic NN-H764 Microwave Oven

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I have a Kenmor Elite microwave oven, model 721.66460400. The timer no longer work properly, i.e., I cannot set the cooking on button. Where would I find someone to provide parts and perfom work to get...


It sounds like a failed membrane keypad.

On some models, you have to buy a separate keypad.

I have uploaded a handy guide with pictures showing you what's typically involved. It's here.

In other cases, you can replace the whole control panel frame assembly, which comes with a ney keypad already on it. This runs more, but it's much simpler.

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.

Then you unplug the keypad (as per the photo below) and move the circuit board into your frame.

34374fd.jpg

Some connectors on the relays have a lock:

positivelock.jpg


You can find helpful exploded views and order parts from the Sears Parts Direct Web site.

That model number (721.66460400) is not showing up in my search. Please check it again.

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

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

Sep 16, 2011 | Kenmore 66469 / 66462 / 66464 Microwave...

1 Answer

I have a Sharp R510BK Microwave. The digital display only shows partial numbers. What part can I order to repair this?


The control unit (both circuit boards and the display) is part number CPWBFB023MRU0 and you can order it for $107.07 from Encompass here or you can call them toll-free at 866-779-5835.

Or you can have your display repaired for only $39.95 in most cases. Details are here.

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

Sep 16, 2011 | Sharp Microwave Ovens

1 Answer

Frigidaire microwave model fmv152ksa Some of the buttons on the console do not work. The number 5 does not work (if I hit timer & any other #, the # will show up, but 5 will not show up) the clock on...


If you're saying that some digits or segments on the display do not light up, then I would first suspect grease or moisture on the control circuit board.

If it's just that some pads on the keypad will not respond, I would say your membrane keypad is failing.

I would first give it a "hard reset" by unplugging it for 2 minutes, then trying it again.

If it still fails, I would remove the control panel assembly (see the disassembly video here) and inspect the circuit board for green, gray, or white residue or grease.

The membrane keypad is not available as a separate part, but comes already installed on a new control panel frame, which is part number 5304464130 which you can order from the Pros here.

To replace that, you unplug the keypad (as per the photo below) and move your circuit board into your frame.

34374fd.jpg

If you need more help, feel free to contact us directly.

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

Jan 27, 2011 | Frigidaire FMV152K Microwave Oven

1 Answer

Microwave model UMC5200BAB display is locked. After power reset per instructions display shows error code -SE- or -5E-. Somtimes pressing Stop for few seconds bring the clock back and it work fine for a...


"SE" error means you have a shorted membrane keypad.

If you (or someone you know) might want to replace it yourself, I have uploaded a handy guide with pictures showing you what's typically involved.

You can find helpful exploded view diagrams and order parts by entering your full model number here.

If you would like to have us do this repair for you, we do that for $39.95 plus part costs

Oct 08, 2010 | Microwave Ovens

1 Answer

Display panel is all white, nothing showing. microwave was still operational using "easy minute" button for quick re-heating for a few weeks, however, now that has stopped working. lights on the unit...


This is a common problem. Your CPU / LSI / display unit needs to be repaired or the entire control unit needs to be replaced.

We regularly repair such display units for customers nationwide by mail for only $39.95 postpaid with a one-year guarantee.

Or you can order a new control unit (part number 101871
) here for $244.36 plus shipping.

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

Aug 05, 2010 | Dacor DMT2420 1200 Watts Microwave Oven

1 Answer

Sharp Microwave diplay light not working


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

Jul 07, 2010 | Sharp Microwave Ovens

1 Answer

Operation manual is lost, how do I set the clock?


The manual for the Magic Chef MCD1311ST Microwave can be downloaded in pdf format from the following site (follow the link then click the "Manuals" tab):
http://www.mcappliance.com/mwodetailpage.aspx?ModelName=MCD1311ST

If you don't have time to download, here's what the instructions state:

SETTING THE CLOCK
When the oven is first plugged in, the display will flash ":0" and a tone will sound. If the AC power ever goes off, the display shows ":0" when the power comes back on.

1. Touch CLOCK pad.
This is a 12 hour clock system.

2. Touch CLOCK pad once more.
This is a 24hour clock system.
NOTE: This oven has multiple clock system. If you want 12 hour clock system, omit this step.

3. Enter the correct time of day by touching the numbers in sequence.

4. Touch CLOCK pad.
The display stops blinking, and the colon start blinking. If you selected 12 hour clock system, this digital clock allows you to set from 1:00 to 12:59. If you selected 24 hour clock system, this digital clock allows you to set from 0:00 to 23:59.

5. Touch STOP/CLEAR pad.

NOTE: If you attempt to enter an incorrect time, the time will not be set and a error signal tone will sound. Touch the CLOCK pad and re-enter the time.

Jun 28, 2010 | Magic Chef MCD1311ST 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

Sharp 1100 w Microwave Model R-420BK - Clock display not working correctly


This is a problem with the control panel assembly, and we repair these for customers nationwide with our guaranteed $39.95 service.

Feel free to contact me directly.

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

Aug 13, 2008 | Sharp R-420DK Microwave Oven

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