Question about Microwave Ovens

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Microwave won't work. Power source is fine (toaster oven is on same plug and working). There's nothing lit up on the control panel.

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  • Microwave Ovens Master
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All have at least one internal fuse, some have separate fuses for the high voltage and low voltage supplies. The back panel is normally only secured by a half-dozen screws. I shouldn't have to remind people but -  PULL THE PLUG FIRST ;-)  

Posted on Dec 18, 2008

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1 Answer

Will not turn on . Appears as though there's no power.


I'd try to unplug for a while. Could be a bad power cord for the microwave itself. I recently had a toaster problem. Bad wire right at the departure from the plug.

May 12, 2015 | Sharp R-930AK Convection/Microwave Oven

1 Answer

I can see the fuse , how do I get the front panel off my microwave.


Since you have the top grill off you are almost there. Make sure the plug is out or breaker off. There should be 1 screw at the top center of the control panel. Remove screw and lift up on the control panel. It should lift and then tilt towards you so you can access the fuse.

Mar 01, 2015 | Frigidaire PLMV169DC Microwave Oven

1 Answer

Sharp Carousel Microwave Mdl 1875 for our RV is dead


>> We also tried plugging our toaster into the microwave plug outlet, and the toaster wouldn't work in that outlet, but worked just fine in a different outlet in the RV.

This means the outlet you plug your microwave into needs to be fixed in addition to fixing the oven. Breaker? Fuse?

>> I understand from another RV forum that microwave ovens for RVs have "special circuitry and cooling features" not found in regular countertop ovens for household use.

Not really in my experience. Any microwave supplied with clean AC power and proper venting space will be fine.

But I'd bet your microwave can be fixed affordably.

The main internal things which can result in this model being dead (no display, no light when you open the door, no beep when you press a pad on the keypad) would be the 20A fuse and the magnetron temperature fuse. There could also be bad connections on the noise filter board.

Also, sometimes a power surge can cause the power to be interrupted to the low voltage transformer on the board, and I regularly repair those boards. I can also write a technical statement to your insurance company or to an RV park as needed.

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

The relevant service manuals for this model are here and here.

You can order Sharp parts from Sears or Encompass.

Contact me directly if you need more help.

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

Mar 08, 2017 | Sharp R1875: Over the Range Convection...

1 Answer

Hotpoint rvm1625sj01 no power


Hello

Plug the microwave into the outlet if the microwave won't power up. Make sure the plugs on the microwave match the type of outlet. A four-pronged outlet can only be used with a four-pronged plug. Same with three-pronged outlets---they only work with three-pronged plugs.


Inspect the plug. Make sure it hasn't been cut or tampered with. Four-pronged plugs can't be cut down to fit a three-pronged outlet. Three-pronged plugs mustn't be forced into four-pronged outlets. A three-pronged plug mustn't be used in a two-pronged outlet, either.


Replace blown fuses, or if there's a circuit breaker, check it for tripped breakers. Sometimes the trip won't be obvious, so cycle the circuit breakers. Turn them all the way off and then back on again.


Plug another appliance in the outlet. You will find this easier with three-pronged appliances. Simply plug a toaster, or other appliance into the microwave's outlet, and see if it works. If it works, you know the problem is with the microwave, not the power circuit. Have the microwave serviced or replace it. If the toaster or other appliance doesn't turn on, you know the problem is with the circuit.

Oct 04, 2011 | Hotpoint RVM1625 Microwave Oven

1 Answer

Machine not turning on


1. Plug the microwave into the outlet if the microwave won't power up. Make sure the plugs on the microwave match the type of outlet. A four-pronged outlet can only be used with a four-pronged plug. Same with three-pronged outlets---they only work with three-pronged plugs.

2. Inspect the plug. Make sure it hasn't been cut or tampered with. Four-pronged plugs can't be cut down to fit a three-pronged outlet. Three-pronged plugs mustn't be forced into four-pronged outlets. A three-pronged plug mustn't be used in a two-pronged outlet, either.

3. Replace blown fuses, or if there's a circuit breaker, check it for tripped breakers. Sometimes the trip won't be obvious, so cycle the circuit breakers. Turn them all the way off and then back on again.

4. Plug another appliance in the outlet. You will find this easier with three-pronged appliances. Simply plug a toaster, or other appliance into the microwave's outlet, and see if it works. If it works, you know the problem is with the microwave, not the power circuit. Have the microwave serviced or replace it. If the toaster or other appliance doesn't turn on, you know the problem is with the circuit.
Hope i could help you.
Have a nice day : )

Sep 04, 2011 | Microwave Ovens

1 Answer

GE Spacemaker Microwave JVM 1542WF 002 : everything works except the turntable and it won't heat. Have tried the TT on/off nothing happens. Have tried the power setting...nothing happens.


Usually, power for the turntable motor and the magnetron tube (the microwave source) are controlled by a couple of things. One is a relay on the control circuit board, and the other is a switch that's operated by one of the door latches. It's possible the control board has gone bad or bad connections have developed. It's also possible the door switch has failed or is out of adjustment and the oven thinks the door isn't closed.

Diagnosing this kind of trouble may require working on the oven while it's operating. MICROWAVE OVENS USE HAZARDOUS VOLTAGES WHICH CAN KILL YOU. You might want to leave the repair to a professional because of safety concerns. Unless the circuit board requires replacement, it's probably worth having this repaired. Unlike some repairs, this one won't cost as much as a new oven.

Jun 22, 2011 | GE Spacemaker JVM1640SJ Microwave Oven

2 Answers

Frigidere PLMV169DCD


You most likely had a power surge and blew a fuse. First unplug the unit,then remove the top grill. There will either be one screw on top of the control pad or 2 on the left side. open the control panel and look for a fuse that has a ceramic center and replace it with a 20 amp one. You can find these at the hardware store

Jan 31, 2009 | Frigidaire PLMV169DC Microwave Oven

1 Answer

Microwave Toaster Combe


The button may be stuck... try cleaning the display really well.

Oct 26, 2008 | Microwave Ovens

5 Answers

Microwave will not heat


If all controls on the panel work fine but the microwave does not heat, then either you have a defective door switch,the smartboard is defective, or you have a defective magnatron.Most likely one of those three.

Nov 06, 2007 | Magic Chef CMV1000B Microwave Oven

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