Question about Amana MVH230 Microwave Oven

1 Answer

After the oven is on for about 5 seconds it has a buzzing or humming sound

Every thing seems to work, the light, turntable, fan and etc. Some times when you push the button to set the length of the cooking and you then push the start button nothing happens. Then if if starts with no trouble it gets the buzzing or humming sound.

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  • Amana Master
  • 17,130 Answers

This seems to be a failure of the control panel pad or switch as it does not take the command.

The only way possible to see if the touch pads are working is to test the voltage of the control pads when it contacts. The input of the Microprocessor should be checked for the pad control impulse to come in. If there is no trigger voltage to the mP this can be the control pad problem.
The mP must be checked for the working voltage and also the frequency oscillation at the crystal leads. If so the mP is working with a suspected control pads which are not able to set the program or timing.
There is no way but to remove the sticker pad and replace, One difficult way to have a chance is to remove the carbon sticker pads and check continuity , You can use a carbon pen to line the tracks so that the multi-meter reads a continuity. With this you can have a temporary fix

Posted on Jan 12, 2013

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9085 Answers

SOURCE: fire help...need a new part or new microwave?

There is a flame sensor whose job it is to cut power if there is a fire. It has probably blown.

It may be called a thermostat, thermal cutout, or thermal fuse. It will look something like the drawings below. (The service info I have on this model is spotty).

But generally, there is one on the floor of the chassis behind the control panel. It should read open on a continuity test.

There will normally be two others, and they will read closed (also called shorted or zero ohms). One is on or near the magnetron and the other is along the top of the cooking cavity.

If you or someone you know wants to look into this, we have *critical* safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

NOTE: There may also 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.

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

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

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Posted on May 27, 2008

localwonder
  • 6784 Answers

SOURCE: Microwave wont kick on unless I push the door up

Hi, this is a faulty door latch assembly. the switch is malfunctioning. the entire door latch assembly will need to be replaced.

Posted on Jun 22, 2009

  • 2501 Answers

SOURCE: doesn't heat anything

It sounds like the micro generator has died.

Yes, you should buy a new one as the cost of repair is likely to be high.

Posted on Jul 01, 2010

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heatman101
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SOURCE: fan stopped running while heating something up

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

Microwave Oven Basic Troubleshooting Tips

heatman101

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Posted on Sep 30, 2010

  • 25 Answers

SOURCE: The motor will not work. The interior light comes

the turn table motor could have failed, but the counting down will be the monitor switch or a micro switch located behind control panel

Posted on Feb 24, 2011

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Unit makes a loud buzzing sound whenever the unit has power.


We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid in about a week.

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.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

This can often also affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on too.

Details of our service and critical safety information and disassembly information is at our site, and our link is at our listing here on FixYa.

Feel free to contact me directly (and please remind me of your full model number) for more information & help.

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

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

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Works - but the sound has changed


Possibly, the "fault" was the buzzing in the first place! Buzzing is usually a cabinet vibration caused by magnetic fields from the "gubbins". If the buzzing should occur again, try pushing/ pulling/ poking the cabinet while the oven is running, you may find a position that causes the buzz to stop.
Another possibility is you previously had something else placed in close proximity to the oven.
If a rattling cabinet is the problem, either try to reposition something, or just ignore it!

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It sounds like your controller may be failing. Or it could be an electrical line problem. Any other electrical itmes giving you trouble? Has anyone measured the voltage level of your power line? It should be around 110-125 volts AC. If it's significantly lower or higher, you may have a bad connection in your breaker panel or in the wiring leading to the home.

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This is not safe. If the fan is not running, the magnetron will quickly overheat and be destroyed. We answered this in more depth in the other place you asked it.

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