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Microwave makes loud popping sound when started. No metal or aluminum foil inside. Possible high voltage wire short?

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Microwave doesn't work after press the start button


Blown fuse inside the oven. If you can do electrical work, repalce it. I wrapped mine in aluminum foil as a quick fix, as I understand the very high risk of fire and possible death from doing so.

Nov 21, 2013 | Sharp R-408J Microwave Oven

2 Answers

The unit makes a loud noise that sounds like lighting hitting something. Could this be the fuse?


no this is the magnetron do not plug the unit in or turn the unit on or you will be seeing alot more then pretty lights this has become a fire hazard and it would be up to you on replaceing the magnetron in your unit preferably consider the cost of the unit compared to the cost of the magnetron they usually run over 100.00 just for the piece if you have any further questions message me back and please remember to rank how this opinion has helped it allows me to help others in similar situations Thanks Rick

Mar 25, 2011 | GE XL1800 1100 Watts Microwave Oven

2 Answers

I put a metal pan with food inside my microwave oven. I heard a popping sound and there are now two tiny black marks pitted into the glass on the door. I can feel the two pitted marks from both inside...


Yes it is safe to continue using the Microwave as long as the integrity of the glass is not compromised and the pitted marks do not exceed 1/4 inch. The RFwave generated by the magnetron is a pretty wide RF wave beam.

If your really concerned you can take the unit to any appliance service center and ask that they perform an RF leakage test. There is really no other way to know if your leakage is within acceptable limits. I can tell you from personal experience that the ony microwave I ever saw demonstrated excessive leakage had either been dropped and had hinge or latch damage.

If your really worried about it and can not get to a service center you can do this test:
- Wrap a tall empty glass with a sheet of aluminum foil and place it about 3 inches away from the microwave in front of the area you where noticed the pitting.
- Run the microwave with a GLASS filled with water of equal size for 1 minute.
- Stand back 3 to 4 feet and watch for any signs of a spark on the aluminum foil.
- As soon as the microwave shuts off check the dry foil wrapped glass for any signs of heat.

(No heat.... no problem. Sparks or Heat = repair time.)

Thanks for choosing FixYa.

Kelly

Sep 21, 2010 | Sharp R-1480 Microwave Oven

1 Answer

My goldstar above the stove microwave popped and now won't heat. Everything else on the unit still works. Is this a problem that can be repaired? Thanks.


Did it make a loud pop like a firecracker?
Sounds like the High Voltage Diode shorted out and it probably is making a low or loud growling noise now..... ???

Sep 11, 2009 | Microwave Ovens

1 Answer

MY UNIT WAS RUNNING AND THEN STOPPED WITH A POP AND NOW NOTHING. DOES IT HAVE A FUSE INSIDE OR IS IT TERMINAL? IT WAS MANUFACTURED IN 1996


If it was in cook mode then a loud pop and it died, it sounds like the High Voltage Capacitor shorted, blowing the line fuse. You need an ohm meter to go through the high voltage section to check everything before you replace the fuse (which will blow again immediately).
BE CAREFULL!!!!! If you take the cover off, be sure to short across the terminals on the high voltage capacitor just in case.

Sep 09, 2009 | Sharp R-3H88 Microwave Oven

2 Answers

My Advantium works sometimes. Other times it "pops and crackles" and the light flashes on and off...of course doesn't heat during those times.


holy **** clean that thing, its probly aluminum residue. watch out a leaking microwave can / will kill you hopefully the seals are ok.

dont even microwave items that were wrapped in aluminum foil just the residue can cause this.

have you ever microwaved a cd? take one and try it polishes them nicely.

Aug 25, 2009 | GE Advantium SCA1000H Convection /...

2 Answers

Not working plmv169dc


HI, the sound you herd was the noise filter and running diode. these important components have failed at this point. you will need to replace these components asap, if possible. this will fix your issue.

The Magnetron Cut-off fuse will need to be replace as well. this will blow if there is a malfunction within the unit.

Jul 22, 2009 | Frigidaire PLMV169DC Microwave Oven

1 Answer

Kenmore microwave loud popping noise when start


That sounds like maybe a high voltage wire or component is running too close to the chassis or one of the components connected to it.

Gruesome as it sounds, sometimes a pest can get inside the works and can move wires around or be killed, then its carcass can conduct electricity and cause arcing.

It may instead be a failing high voltage diode.

To find helpful exploded view diagrams and get part numbers, you can just enter your full model number (66562619200) at the Sears parts site.

Here are some links you or someone you know can use (in order given) for test help, but

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

http://www.gallawa.com/microtech/diode.html
(if it is NOT shorted or burned looking, it's probably fine)


http://www.gallawa.com/microtech/mag_test.html
(continuity can be good even though mag is bad!)


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

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

Jun 14, 2009 | Whirlpool MH7130XE Microwave Oven

1 Answer

Microwave will not heat


Q - The microwave makes a loud "hum or buzz" noise but will not heat up the food?
A - 9 times out of 10 this is usually this is a bad magnetron, the other time is sometimes a bad high voltage diode. See components section.
Q - My microwave is running and sounds like it is working but will not heat up anything.
A - Many thing can do this but, common things are....loose high voltage wire.....poor solder joint on board.....magnetron.....power relay.....
 Q - The microwave display counts down and the inside light is on,  but nothing is heating and the fan is not running.
A - This most commonly is a bad door switch, other possible problems are a faulty relay or solder joint on the power module, but a bad door switch is most common.
Q - The fan in my microwave oven is not running will this hurt my microwave?
A - YES, the fan cools the magnetron and electronics, take the microwave in for service, most fans are not too expensive to replace.
Q - My microwave blows the fuse inside itself as soon as I push the start button.
A - Usually a shorted high voltage capacitor...see components section.



Mar 06, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Microwave oven


If you put metal, like an alluminium foil into microwave, the magnetron will start arching, and you will damage magnetron, diode or capacitor.

Test the high voltage capacitor, the rectifier diode.or the magnetron. If all this are fine, test the control board.

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. (here in UK).


Jul 24, 2008 | Kenmore 63792 Microwave Oven

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