Will generator be damaged by Microwave lugging down the generator?

The thermistor has failed.
Replace the thermistor with the Sharp approved type and part number.

This sounds like the magnetron has failed, also! the high voltage capacitor and diode can be a factor, since all the above work together in generating heat for the food. If the magnetron has failed it is cheaper to replace the microwave oven.

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

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The arcing that caused the fire also caused the microwave generator be over loaded and sent stray voltage into the chassis. Microwaves MUST have the proper coating in the oven or aching will occur all the time. IF the coating is damaged and it can be damaged in areas that you cannot see, you will be money and heartache ahead if you replace the whole thing now.

I have had the LG model lrm1260sw microwave for 3 years. Recently it quit heating. I found the problem was the soldered grounding lug connection on the power transformer had lost circuit continuity and failed. One of the secondary coils on the power transformer, red wire / bare copper wire, is connected to ground / chassis. I cleaned the lug connection and added a length of wire twisted together with the bare copper coil wire and soldered to the grounding lug. I then grounded the extra added length of wire to another chassis ground point. Make sure the transformer to chassis mounting screws are tight also. Now the microwave oven works like new again.

your micrwave may run fine at 110 but it draws more power than the generator is putting out when the magnetron kicks on which is the part that creates the microwave causing the food to heat up. In other words the amperage is too low for the microwave. Amperage is what matters not voltage.

I had to buy a 2000 watt inverter type to run mine

These units have an issue with the microwave generator overheating. When this happens the unit shuts down to prevent damage to it. When it cools off, it comes back on. That part called a magnetron is not listed to for purchase.

look in the cabinet above the microwave, there should be 2 bolts which go through the bottom of the cabinet and screw into the microwave. remove these 2 bolts holding the unit steady then tilt the unit down and away from the wall.

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

Microwave Oven Basic Troubleshooting Tips
http://www.fixya.com/support/r5508031-microwave_oven_basic_troubleshooting

heatman101