Question about Microwave Ovens

1 Answer

Fan failure /Intermittent heating

We got a note on the keypad to replace the filter. The fan stopped turning on. We replaced the filter and still didn't work. After that, the M/W turns on, heats for two minutes and then stops heating. The unit still runs and the turntable spins. Is this due to the fan not clearing the steam from the unit?

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Quite likely your microwave is trying to prevent it self from self destruct, because if the fan is not keeping the electronics components cool enough while its running the high limit thermo will disconnect power from the heating circuit, if the fan is not working it should be replaced , that's a techs job.

Posted on Feb 12, 2014

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 17 Answers

SOURCE: Microwave turns on, but no heat or turntable movement

The problem is that the magnatron is not getting power. Chance is that if could be a bolwn fuse inside the unit. If the fuse don't fix it then that leaves the charging diode, capacitor or the magnatron, or high voltage xformer of which without technical epertize I would not recomend attempting to replace. good luck

Posted on May 14, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: Over the range Goldstar microwave not working????

(If you need more help than this, please reply back with your model number)

It's probably a bad door switch or door switch mount.

Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.

Door switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.

If you only need a switch, you can order one from us for $5 postpaid.

If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases.

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

Posted on Oct 03, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: GE XL 1800 microwave light and fan operate but no heat

With the symptoms you have, I would most strongly suspect a shorted high voltage rectifier diode or a bad magnetron, or a loose and possibly corroded connection on the magnetron's terminal.

The diode is a fairly cheap fix, and your magnetron is still under the part warranty, but you would have to pay labor.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

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.

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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.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.gallawa.com/microtech/diode.html
(if it's not shorted or burned, it's probably okay)


http://www.gallawa.com/microtech/mag_test.html

If it's within the magnetron portion of the warranty (5-9 years) but out of the original full warranty (1 year), G.E. will cover the part cost, but not the cost to visit you or the labor charge to do the work.

If it's within the mag warranty, G.E. should send you the magnetron to do it yourself. Call them at 888-239-6832 with your model, serial, and manufacturing date.


If nothing else, you can save about $50-75 if you remove it from the wall and take it to a GE-authorized servicer.

You can find a GE-authorized servicer by calling GE Appliance Service at 1-800-848-7620 or here.


Accessing some components for testing and possible replacement will require you to remove the oven from the wall.

If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.

You can download GE owner's manuals and installation instructions here.

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

Posted on Mar 02, 2009

ginko
  • 19396 Answers

SOURCE: Whirlpool MH1140XM: has power, but no heat, turntable not spin.

Test the high voltage capacitor, the rectifier diode.or the magnetron.

The diode and capacitors can br tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, even if power is off. Capacitors can get discharged by shorting their two contacts.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.

All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, contact the seller here to purchase parts.

Posted on May 21, 2009

freetek
  • 5568 Answers

SOURCE: Whirlpool MH1150XMB-0 runs but does not heat food

If the housing of the unit isn't too difficult to remove (normally 3-5 Phillips screws around the rear edge), with the unit unplugged of course, check for a user replaceable fuse inside. The magnetron is separately fused and fuses can fail due to metal fatigue. It will be high amperage; 10-20 amperes and many hardware stores will have them. BTW, there is no residual radiation from a magnetron that isn't operating.

Posted on Aug 18, 2009

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1 Answer

Replace keypad microwave pvm1870


You could probably replace the keypad yourself, as it most likely plugs in. Get the exact part number and have a search for it.

Dec 12, 2014 | In Microwave Ovens

1 Answer

Controls, heating and turntable function normally, but there is an intermittent failure (approx 80 of the time) where the interior light and blower do not function when the microwave is operating .


follow this test and fix it; God bless you
1)

  1. Light bulbIf your microwave light bulb is not working, perhaps it has blown. The first step is to replace the bulb and power on the microwave. If this does not correct the issue, the next step is to check the socket and wiring to verify if that is the problem.
  2. Light bulb socket & main control boardIf your microwave light bulb is not working after the installation of a new bulb, check the light socket as well as the wiring to ensure they are properly operating. If these sources are functioning properly, the next step is to check for a faulty control board as a possible root cause to your microwave light bulb malfunction.
2)
  1. Exhaust fan motorIf your exhaust fan motor is not running, there are a couple of things that you can check involving the motor to locate the problem. After removing the fan motor, you can manually attempt to turn the fan blades with your hand. If the fan motor is working properly, the blades should spin effortlessly. If this does not occur and the blades are taught, the motor will need to be replaced. Secondly, the fan motor itself can burn out due to time and usage. Using an ohm meter, the exhaust fan motor should read open for continuity. If it does not, then the fan motor has expired and will need to be replaced.
  2. ThermostatAnother part that could cause the microwave exhaust fan to not work is a faulty thermostat. A thermostat gauges the air temperature, which activates the exhaust fan when required. If this part becomes flawed, the exhaust fan will not energize and the thermostat will need to be replaced.
  3. Main control boardIf your exhaust fan is still not working and the microwave fan motor, wiring, and thermostat are operating accurately, the root cause could be with the main control board. Replace the main control board.
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Oct 31, 2013 | Jenn-Air JMV8100A 1000 Watts Microwave...

1 Answer

GE microwave that will not stop beeping


he most likely cause of this problem is a keypad on the control.

You can try the stop/clear keypad to silence the beeping.

You can put the controls into child lock and see if the intermittent beeping stops. The instructions to turn the child lock feature you have it in the owner manual . The child lock disables most keypads.

otherwise replace the control board.

God bless you
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Feb 08, 2013 | Microwave Ovens

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GE Spacesaver Microwave not heating, inside fan not working


I suggest you have the microwave oven replaced, the prices have dropped considerably for the last several years and you have got your money worth out of the unit.

Mar 02, 2012 | GE JVM1640 Microwave Oven

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The right Half of the touch panel does not work and there is no power when start is pressed. Fans and lights work


Without a model number, I can only give you a general answer, but feel free to contact me with the full model number and detailed symptoms for a free estimate and/or do it yourself tips and part numbers, etc.

The problem is a failed keypad, which can occur due to manufacturing weaknesses, direct spraying of spray cleaners, heat or steam or grease accumulation due to failure to use the hood vent exhaust fan while cooking on the stove top, or just poor design.

Either way, you would have to replace the membrane keypad or outer door panel or control panel frame, depending on model.

Oct 05, 2011 | LG LMVM1945 Microwave Oven

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GE Profile Microwave Model JEM31SA, intermittent problem with keypad going dead after cooking. Have to go out and flip breaker to reset. It prompts for clock set info and functions normally again after...


You're going to have to replace the keypad module and possible the control module (do the keypad first). You can try contacting these folks: http://www.appliancepartspros.com/search.aspx?model=jem31sa%20001%20ge%20spacemaker%20microwave
And see if they have a keypad for your unit. Depending on the age of your microwave, you may be best off replacing the whole microwave.

Aug 29, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Whirlpool Microwave Hood combination Model MH6150XM turned itself on without anyone touching it. The oven and the fan went on. It continued to operate when the microwave door was opened. We unplugged...


Direct spraying of cleaners on the keypad and steam from the cooktop can short the keypad.

Luckily, it dried out. Sometimes it doesn't, and the keypad has to be replaced.

I always recommend that you spray non-ammonia cleaner on a soft cloth (not a paper towel which can scratch) and gently wipe the keypad.

And I always recommend that you use the vent fan when cooking on the stove top to keep heat, steam, and grease out of the controls.

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

Jun 22, 2009 | Microwave Ovens

1 Answer

Microwave dead even though power works


It sounds like the magnetron overheated and opened the thermal fuse on the magnetron.

This can be caused when the internal cooling fan is not running or by a magnetron that is failing.

When I say internal cooling fan, I do not mean the hood vent exhaust fan which you can turn on and off manually.

I'm instead talking about the internal fan which comes on automatically whenever you microwave.

It is vital that the cooling fan runs, or the magnetron will be destroyed.

There should be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

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.

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

The magnetron will have a 5 to 9 year warranty. Your manual will tell you that.

You can download GE owner's manuals and installation instructions here.

If needed, GE may send you a replacement magnetron. GE Customer Service is here.

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

Dec 04, 2008 | Microwave Ovens

1 Answer

The Keypad stopped working


I suspect you atually have a bad keypad, but apparently GE decided to send you some free gifts? Wow. Sell them on eBay if they're not needed. *grin*

Replacing the keypad is usually a pretty easy job for a DIYer.

In many cases, it may be caused by steam or grease, but it may also just be a failure over time. I always recommend that you use the vent fan whenever you're cooking on the stove top. That helps keep steam, grease and heat away from the microwave controls.

We have *critical* safety, disassembly, and troubleshooting info at our site. You'll find a link to our site in our listing here on FixYa: http://tinyurl.com/yzjozk

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

There should also be a very helpful "mini-manual" hidden inside the unit behind the control panel. It's very helpful when troubleshooting. You can use it for testing your keypad.

If you need further assistance, please feel free to contact me directly through the links at our site: http://tinyurl.com/yzjozk

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

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