Question about Microwave Ovens

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Microwave has stopped working and i don't know where the reset is.

Unit shut down in 30Swec warm-up and will not restart.

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  • Microwave Ovens Master
  • 9,085 Answers

<-- I could have given you some specific detailed repair information if you had included the full model number as shown on the tag on the oven (not from the manual).

And if FixYa would inform us experts when as persons responds to a request for more information, we could reply back quickly.

But since (for some reason) they won't, you'll just have to post a new help request.

But please be sure to include the full model number from the tag on the oven, and exact symptoms - what it's doing or not doing, and when.

Posted on Feb 17, 2014

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9085 Answers

SOURCE: Sharp R-1450 microwave

This is usually caused by either a bad door switch, a loose door switch mount, or occasionally a problem on the control panel.

On these, it's usually a broken tab on the upper switch holder.

One test that sometimes helps is to gently lift up (and/or push down) on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

That sounds like what's happening when you hold the Start pad - maybe you're moving the frame and chassis enough to help it work.

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:.

You can probably find exploded views and order parts by entering your model number here at the Sears parts site.

The best place to order Sharp parts is Tritronics.

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.

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

Posted on Aug 19, 2008

MicrowaveSvc
  • 9085 Answers

SOURCE: Samsung MU3250W Shut down

It could have been steam or humidity.

If this is an over the range model, be sure you always use the hood vent exhaust fan when you're cooking on the stove top.

Whether it's a counter top or over the range top, always be aware that the cooling fan is running when it's cooking.

When in doubt feel for air flow through the vents.

Good luck.

Posted on Oct 19, 2008

  • 1 Answer

SOURCE: Kemore Microwave Hood Combination

I HAVE KENMORE 665/61629 LIGHT STAYS ON. AND DO NOT COOKS. AND THE FAN DOES NOT WORK.

Posted on Jan 19, 2009

MicrowaveSvc
  • 9085 Answers

SOURCE: Model number jvm1650sh03 GE Profile microwave

The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

If that doesn't work, leave it unplugged for about 5 minutes.

Otherwise, this is almost always due to a defective or loose magnetron causing electrical interference and disruption in the control circuit board.


Details covering some previous models are in their bulletin here. Even if your model is not on the list, the same problem can occur.

If your magnetron was recently replaced, it may have loose mounting nuts or bolts or maybe the wire mesh RF gasket was not installed or got pinched.

NOISY MAGNETRON TEST (c) 2009 William E. Miller prototech@usa.net

(PLEASE do not be fooled into thinking that the procedure outlined at this link is a "fix". It should only be regarded as another test method to prove that you have a noisy magnetron which must be replaced.)

One way to test it is to do the following:

1. Unplug the microwave or turn off its breaker.
2. Open the door, then detach the control panel as shown in the video at http://www.microwavedisplay.com and swing it down, but without disconnecting the wires. If you have any trouble getting the grille off once the screws are removed, slide the hood vent grille to the left about 1/4", then then pull it forward. On some models there are L-shaped clips that fit into a slot to hold bottom of the vent.
3. Plug the microwave back in.
4. Make sure neither you nor anyone else reaches in behind the control panel. There will exposed high-voltage connections.
5. Put a few cups worth of water in a microwave-safe container and place it inside the microwave.

6. Shut the door.
7. Run the microwave for about 1 minute or so on full power. (Time Cook > 1 > 0 > 0 > Start, e.g.)
8. If it does not fail, try it several more times.
9. When the water boils, change the water and try again.


NOTE:
If your model does not have a door handle, you will need to unplug the oven and reattach the control panel to be able to open the door.


If it still does not fail, I would recommend that you put it all back together and keep using it until it fails more consistently, then repeat this test.

If it keeps failing while the board is in the down position, you either have a very leaky magnetron or possibly another problem.

So you can then get a Ziploc bag and insert a flat piece of aluminum foil into the Ziploc and close it.

Then (with the power off) tape it over the circuit board as best you can, covering it as much as you can, making sure it does not get snagged or punctured.

Then try the oven again. Do not leave this test shield in place as a "fix". It is not safe.

While a microwave should never be left running unattended under any circumstances (as your owner's manual will tell you) it's even more important when one is exhibiting a failure or any odd behavior. So play it safe and stay with it while it's running!

If you or someone you know want to replace the magnetron yourself, you will need 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.

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.

dee77f7.jpg

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

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

G.E. will send you the magnetron to do it yourself. Call them at 888-239-6832.

Be persistent. You may have to speak with a supervisor.


If it is not within the magnetron warranty, you can find helpful exploded view diagrams and order parts by entering your full model number here.

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

Posted on Aug 09, 2009

MicrowaveSvc
  • 9085 Answers

SOURCE: ge spacemaker jvm1650sh01 starts to microwave then loses power

See this FixYa solution.

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

Posted on May 30, 2010

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Ran the microwave empty...it shut down. Is there a reset button


You could have burned something out on unit. Check fuse or contact GE. Look in manual for trouble shooting tips.

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Door Switch




If the microwave runs for a few seconds and then shuts off, a door switch might have failed intermittently. Check each of the door switches for any signs of overheating, arcing, or burning. Also check each of them for continuity. Replace any of the switches that is visibly damaged or that only has continuity intermittently


mwswitchtest2.jpg

Step 2:

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If the microwave runs for a few seconds and stops there may be a short circuit in the main control board. Check other components first, these boards are often misdiagnosed.


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If the microwave runs for a few seconds and stops the touchpad and control panel might be defective. There are several other components that can cause this problem, be sure to check any other components before replacing this board.

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If the microwave runs for a few seconds and stops the touchpad might be at fault. This is not common. Generally speaking, if the microwave display is working and some of the buttons respond correctly but some don't, the problem is with the touchpad.

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If the microwave runs for a few seconds and stops the high voltage transformer might have an intermittent short. This is not common. Check other components related to the microwave symptom first.

Thermostat




If the microwave runs for a few seconds and stops the thermostat might be defective. Watch our video on testing thermostat

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Step 4:

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Step 5:

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use the DVOM tester and fix it. God bless you

Feb 08, 2013 | Microwave Ovens

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Hi, I have a Kenmore 87103 microwave and it has started acting up lately. When I place something in the microwave and set the timer, the timer counts down however the microwave doesn't work (no sound and...


Mine also does the same thing however I only need to lift the door upwards slightly (after it's closed) and it engages the High Voltage Transformer, thus working as normal.

Once you know that, you can get it to work every time. I beleive the clips on the door don't properly stop latch in correctly and the safety feature keep the microwave from acutally turning truly "ON".

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It could have been steam or humidity.

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Whether it's a counter top or over the range top, always be aware that the cooling fan is running when it's cooking.

When in doubt feel for air flow through the vents.

Good luck.

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You can order parts here: https://www.mcappliance.com/partorder.aspx

To contact Magic Chef about getting an *authorized* servicer, see: http://www.mcappliance.com/contactus/contactus.asp

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

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