Question about Microwave Ovens

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My microwave starts runnig when i open the door

It also works when door is shut

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  • Microwave Ovens Master
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This is usually caused by either a bad door switch, a loose door switch mount (which are pretty simple problems to fix) or occasionally a problem on the control panel.

Door switch or mount trouble is usually 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 a universal type here 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 Dec 08, 2008

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1 Answer

Magic chef MCD1611ST microwave, the display lights up, the time and powerlevel can be set, the light works when the door is open but when i hit start everything shuts off. Any suggestions?


There are a lot of possible causes, but I'd look at the door switches first, and the wiring connectors to them. Make sure the contacts on all the switches are opening and closing.

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My GE stainless steel 1100 watt microwave starts beeping out of the blue and the display panel shuts off and when I open the door it resets itself and then starts to beep when I close the door again.


Try removing the power cord for about a minute, push all the touch pad 'buttons' and then plug it back in. If this doesn't work it sounds like you may have a bad door interlock switch or a bad PCM .. Good luck !

Feb 11, 2015 | GE XL1800 1100 Watts Microwave Oven

1 Answer

Microwave keeps running with door open


I'd say the door interlock switch has failed, and supplies a connection when it should not. Microwave ovens can be dangerous to anyone poking around inside, even when unplugged, so get a quote from a service tech. You might find that parts+labour is almost as much as a new one.

Microwave radiation being released through an open door is also a hazard, as it is known to cause eye cataracts, so don't get near if the oven does this.

Nov 19, 2013 | Panasonic Inverter Countertop Microwave

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Microwave starts on its own when microwave door opens.


see this adjustments. God bless Oherwise the main control board can be defective.

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Oct 03, 2012 | GE Microwave Ovens

1 Answer

Microwave won't start


I have the same problem. Is the light still on inside the microwave? Mine is on and the microwave thinks the door is not shut. I took the top off of the microwave and the latch needs to push down on a switch once shut. The latch was reaching the switch, but I think some spring in the door, pushing the latches down, has broken since it reaches the switch when closed but there isn't any downward force to flip the switch.
I am trying to figure out how to repair the latch but if your light is on when you "shut" the door, you may have the same problem.

Aug 23, 2012 | Cuisinart CWM-100 Microwave Oven

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Just purchased our Cuisinart Stainless Microwave, plugged it in, read the operational instructions and set the clock. As a test, we tried to heat water....does not work. Any suggestions?


Yes! Take it right back to the store for exchange, cause could be a bad magnetron "that heats food" and a couple parts that work together with the magnetron,or there may be issues with the keypad, none of these will be cheap to fix.

Jan 30, 2011 | Cuisinart CMW-100 Microwave Oven

1 Answer

I have a 10 year old MH7130XE Whirlpool microwave oven. The oven and key pad both work, and the oven heats just fine. The problem is the oven begins running as soon as you open the door...without pushing...


I'm assuming you mis-typed and meant the oven begins running when you SHUT the door and stops when you OPEN the door. Please tell me this is what you meant! If the microwave oven runs with the door open, UPLUG IT IMMEDIATELY AND DO NOT USE IT!!!

If the oven begins running without pushing the start button then the controller is bad or the Start button is worn out and making contact without pushing it. (Most likely it is your controller.) Generally, it is not worth the cost to replace the controller on a 10 year old microwave. Probably time for a new one.

But if you want, you can call Whirlpool and see what they suggest at 800-253-1301.

If this was helpful, please select YES to the first two RATINGS questions. Good Luck!

Oct 18, 2009 | Whirlpool MH7130XE Microwave Oven

1 Answer

GE microwave won't turn off


Just checked the GE website. Had the same problem with my 5 year old microwave. GE website says to close and open the door quickly three times. First time I did this it didn't work. Second time I closed the door with some significant force and reopened it more quickly. Worked. Unplugged the microwave, plugged it back in, still fine.

Mar 21, 2009 | Microwave Ovens

2 Answers

Fuse in Microwave blew , now starts running when door is opened


You have one or more defective door switches, or the door switch mount is loose or damaged. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your model number here: http://tinyurl.com/gv383

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