Question about Jenn-Air JMV8000 Microwave Oven

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Sharp R-930CSF does not work, just blanked out, no display, nothing.

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

It will give you safety info, step by step help in disassembly, troubleshooting tips, and part numbers.

Most computers will open this document automatically, but you may need the free Adobe Reader

You can order parts from Encompass here or you can call them toll-free at 866-779-5835.

Common 20A ceramic fuses are
available from places like Wal-Mart, Lowe's or Builder's Square.

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

Posted on Jun 04, 2009

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Sharp R-630D Display Problem


Usually switching off and removing plug for couple of minutes solves this problem if not then its going to need replacing as a resistor has probably gone on the display board unplug it then let me know what happens ok

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Display is blank


If the display is blank, and the oven works, 9 times out of 10 it is a problem with the circuit board that drives the display.

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Touch screen panel not working. in past unplugged and then plugged in again and it worked but now nothing


If you mean the display (the microwave works but no info on display) look here for a good diy thread:
http://nzlamb.wordpress.com/2010/04/10/sharp-carousel-microwave-lcd-repair/

Aug 12, 2011 | Sharp R-1750 Microwave Oven

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LCD pad, numbers do not appear clearly but as a distorted image. example 1:10 may appear as blank.1E example .40 may appear as blank.1L microwave works fine just the read out panel is distorted,...


On most recent Sharp microwaves, the fuse only interrupts main power, so if the fuse is blown, it will be totally dead.

The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

If that doesn't work, leave it unplugged for about 5 minutes then try it.

Then chances are you have a failed microwave display. Unless this is an over the range, touch screen, or convection type, it's probably not worth repair, but you can get more information on such repairs here.

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


Jan 15, 2011 | Sharp R-310CW 1100 Watts Microwave Oven

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Control Display is burning out, many of the LED segments are blank.


Replace the display. It is available as a unit from a Sharp Service Dealer.

Jan 05, 2011 | Sharp R-1610 Microwave Oven

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Sharp Carousel Microwave has no power


I too believe that a "protection fuse" was possibly blown. It would need to be found and get replaced. Hopefully it is just a fuse and nothing else because the way it sounds to me, the microwave may be damaged.

Good Luck!

Jun 11, 2009 | Sharp R-1870 Convection/Microwave Oven

1 Answer

No power


If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

We have the full service manual, and I have uploaded it to our site here.

The best place to order Sharp parts is Tritronics at http://www.wehaveparts.com

Once you have it fixed, if you would like for us to replace your display on the control board, we can install a new display tube for $69.95 or a good used one for $54.95 and those totals include return shipping.

Please feel free to contact me directly if you need more help.

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

Jul 06, 2008 | Sharp R-1480 Microwave Oven

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