Cant pop popping corn

Definitely a Combi MICROWAVE oven?

Popcorn needs a certain amount of moisture in it to 'pop'. 1000 watts of microwave should work fine. Make your popcorn, put it in a bowl and eat the popped corn. Put the un-popped kernels in a pan with a little oil and see if they will pop. My theory is that the bag or the corn is old.

Make and model are always useful in such questions, then we can check specs.

Most M/W use an estimated setting based on ounces of corn. I've found that many do not tell you how much is in each bag. The bags usually have no size markings. Check the face of the box for something like "2 each 3 oz bags".
* Try to use a normal re-heat setting (at full power) and cook a bag using the a minute longer than the recommended setting. Listen to the popping sounds and stop the M/W when the pops slow to 3-4 seconds. (2-3 seconds with 'Kettle' corn) Note the time lapsed and this is your correct setting. You may try the popcorn menu to find a similar setting but really your best bet is to use the method above as it's the most accurate.
* Note; Old or stale corn will not all pop (it dries out as it gets older and there is not enough moisture in the kernnal to steam pop.)
* M/W varies from model to model and brand to brand. Only way to check is to try several settings to get the best results.
* Pop corn brands vary in quality. You will find the better name brands pop more.
* Once you find a good popping brand then stick to that size and brand. (unless they change it on you.)
* If your really stuck on getting every corn kern popped then go with an air popper. It won't come out of cooker till it pops.

Good movie, don't forget the goobers, milk duds, frosty...
Aloha, ukeboy57

Try setting your timer for 2.75 mins to 3.25 mins

Sounds like the magnetron is over heating. Try putting a 4 0z cup of water in the oven along side the popcorn bag. See if this helps. Usually, the oven only runs 2 to 2.5 minutes for a bag of popcorn. You may have to experiment with the slightly different cooking time...

Popcorn is a low-moisture food which can cause a microwave to overheat, as can a failure of the cooling fan or blocked vents.

You should always turn a paper plate upside-down on the turntable (slightly off-center for better heating) and place the popcorn container on top of that.

The paper plate elevates the popcorn for better exposure to the energy and protects the turntable from excessive heat.

Placing food off-center instead of in the center increases exposure to the energy and prevents the same spot on the turntable from being overheated repeatedly, which leads to material fatigue and cracking.

It's also a good idea to put about 1/2 cup of water in a 1-cup microwave-safe container in the corner of the oven when cooking low-moisture foods like popcorn, bacon, and potatoes.

The microwave's magnetron has a thermal protector (thermostat, TCO, or thermal fuse) attached to it.

If the magnetron gets too hot, it can be damaged or destroyed, so the thermal protector opens and disconnects the power to the whole oven.

If it is a resettable device, the power will be restored when the device cools. If it is not resettable, the device must be replaced.

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Microwave Oven Control Panel Repair Nationwide
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dont be a puss just use the thing

You can order a replacement dish here. The dish shattered because the heat from the bag of popcorn was too much for it. If you look at the owner's manual for almost every microwave, they tell you not to put popcorn directly on the glass dish, but to put it on another plate.

The oven should be safe to use. Just look for any burned spots on the paint in the bottom of the cooking cavity.

Indeed, sounds like the magnetron is shot. Not a big deal, I've replaced them before. But unless you know what your doing, don't! If under warranty, get a service tech out. Check on the service call charge ($) first....it may be cheaper to buy a new micro!