GE microwave JEB1860 runs like normal but no heating. 21 months old. What is causing the no heating.

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

The problem is caused by a bad magnetron, inverter board, "7 years old or less" and possibily the keypad control board.

There are three things that will cause this, the magnetron " common problem " and the high voltage capacitor and diode, cost can run high depending on the nature of the repair.

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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Personally, I would replace the Microwave. It is bound to be below specification by now if it has been used quite a bit.
Then you will know you will be fine for a few years.

If it is running and not heating the problem will most likely be in the heating element which is called a 'magnetron' before you throw this away check with your owners manual, most of these have a 1 year warranty on the microwave.

if everything works except the heating, it is most likely the mag tube is on its way out.........that is the most common reason for it not too cook.......since the microwave is a GE and it is 3.5 years old, i would say you are better off buying a new microwave, the mag tube starts at around $70.00 and up + the labor it costs too have a service person put it in........around another $60.00

Hi, there are three issues that will cause a no heat situation in a microwave. these issue are a failed Magnetron, busted cut-off fuse and, failed diode.

I recommend checking all these area that are located inside the microwave for faults.

The most common issue will be a failed Magnetron.

The diode and, fuse will be located on the noise filter assembly.

use a high voltage probe to check high voltage, if present replace the magnatron if no HV replace the high voltage board this is the board that has the heavy wires to the magnatron