20 Most Recent Jenn-Air JMV8208A Microwave Oven - Page 6 Questions & Answers

If the microwave oven is 7 years old or less the most likely problem is the magnetron, or the inverter board, cost consideration should be carefully thought out.

Contact the maker or Google the model number for "parts" That part likely will require the unit to be taken apart to replace it.

Most if not all of these units have a safety switch--can't get at it from the outside---if unit is taken apart it often is snapped into a plastic holder and prevents the unit from working if door is open.If it is loose or not engaged completely the unit will do what you are describing.

UNPLUG M/W BEFORE INSTALLING NEW BULB

One or two of the micro switches have failed, you will need a professional to remedy the situation.

There are three common issues, magnetron "heats food" high voltage diode"sometimes cracks" or high voltage capacitor "usually shorts"

Not likely. More likely it's a bad door switch or door switch mount.On Sharps and those made by Sharp (Dacor, Wolf, Viking, Electrolux, etc.) it's usually the bottom door switch.See this handy help file on door switches.If you need further help, please reply back or post a new help request which includes your full model number and the symptoms you mentioned above.

Please post your full model number and a more detailed description of your symptoms.Are you saying the keypad fell off the oven?

probably belt loose/broken, remove case to see.