Question about Microwave Ovens

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Pan. microwave nns762bf has low/poor heat

Takes 3 min to warm coffee. Ext- all buttons/readouts/countdown/power bar seem ok, shell off- no sign of burn/char/black on boards/components. Door switches seem ok ( one recent replace)

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  • Microwave Ovens Master
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Assuming the line voltage, turntable and stirrer are okay, low heat will be a bad magnetron.

Posted on Nov 07, 2008

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1 Answer

How do you use the kitchen timer and cook at the same time?


If you have the kitchen timer set for instance for 10 minutes and it is counting down, and then you want to reheat you coffee for 2 minutes. You would hit either time cook or reheat button and enter 2 minutes ten hit start. The microwave will heat your coffee and show the 2 minute countdown for that. When done it will revert back to what is left on the 10 minute kitchen timer without missing a beat on most microwaves.

Feb 26, 2015 | Microwave Ovens

1 Answer

Counts down OK but not heating.... power says 10 (highest) all buttons work .. countdown ok but put a cup of water in and does not heat up.


Hi,


Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic Microwave Oven Troubleshooting Tips

heatman101


./././././././

Jan 12, 2011 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

The display panel does not light up so you can see what you are doing. everything else works.


Hello there
To replace the light you will first have to remove the outer shell.
To do this
(1). Remove all of the screws on the back of the microwave that hold on the shell
(2) Remove the screws that are on the bottom.

(3) now the shell should slide off towards the back of the microvave.
Note : this may take a little bit of pressure to get it off ok?

(4) Once the cover is off look towards the fromt of the microwave and
you will see the bulb. now just replace the bulb and reinsert the cover and the screws and you are all done ok? If this does not fix the issue then t
his is probably a bad connection or bad low voltage transformer on the control board.

Dec 10, 2010 | Sharp Microwave Ovens

1 Answer

Kenmore microwave Model 72 8975590 (750 W) is taking longer to heat food. Takes 3.5 min to bring one cup water to boil, previously took 2,5 to 3 min. Does the element lose power over time?


I can adjust the power level so that circuitry seems to be ok. The longer water boil time could be partially due to the colder winter temperature of the inlet water. We'll just cook the food a bit longer as long as the magnetron is still working.

Jan 21, 2010 | Kenmore Microwave Ovens

1 Answer

Put a hot pocket in for 3 min and it doesnt even


the unit inside the microwave that heats called the "magnetron" has gone bad or the circuits that power the magnetron have failed. if its under warranty still, send it back to the manufacturer. if not you can call some repair shops and see how much it would be to service it, but its most likely going to be cheaper to purchace a new microwave since they are relatively cheap these days

Jan 14, 2010 | Microwave Ovens

2 Answers

Have old tappan speedwave 1000. buttons work but when you press start nothing work except the countdown on display


Unplug the unit for 15 minutes...plug the unit in and try again. If that doesn't work - take the back cover off and look for any blown fuses...should be obvious.

Mike...

Nov 29, 2009 | Tappan Microwave Ovens

1 Answer

The microwave quit heating. Could not warm a cup


Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101
hjjk

Oct 24, 2009 | Maytag MMC5000 Microwave Oven

2 Answers

JVM1540DN1WW leaves food cold


Put in one cup of water at 2 1/2 minutes on high -- it should boil.

The fan slowing down is normal becaue the magnetron, which does the heating and, which pulls about 10 amps, will drop the voltage across the fan and slow it down.

What type of circuit was your old microwave using? Was it a circuit dedicated to the microwave?

Charlie

Aug 22, 2009 | GE Spacemaker JVM1540 Microwave Oven

1 Answer

My microwave does not heat anything. The touchpad, exahustfan, light works. The motor turns on and turn-table works for the number of mins specified but does not warm up the stuff. Please help!


Sounds like the magnetron has failed. This is the component that produces the microwaves that heats the food.

The cost of the magnetron is about 95% of the cost of a microwave oven. Most people don't, for this reason, replace the magnetron, they replace the whole oven which is probably what you will end up doing.

There is a possibility that the circuit that provides power to the magnetron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it apart. It is a fairly lengthy process however.


Benjamin

May 25, 2009 | Whirlpool MH2155XP Microwave Oven

1 Answer

Microve turns on, but will not heat Model number is FMT148G1B2 Everything seems to work except there's no heat. Clock works, countdown timer, light, turntable, etc., just no heat.


Sounds like the magnetron has failed. This is the component that produces the microwaves that heats the food.

The cost of the magnetron is about 95% of the cost of a microwave oven. Most people don't, for this reason, replace the magnetron, they replace the whole oven which is probably what you will end up doing.

There is a possibility that the circuit that provides power to the magnetron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it apart. It is a fairly lengthy process however.


Benjamin

Apr 16, 2009 | Frigidaire FMT148G1 Microwave Oven

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