My two year old Frigidaire Microwave suddenly stopped cooking. All of the buttons work. The lights, the fan, the timer, and even the cooking timer operate. It's just that the light goes on and the timer counts down but the machine is silent and doesn't cook. What is going on here? Should I have it repaired? Can I do it myself? Should I buy a new microwave?

If the timer counts down and nothing else happens, the secondary interlock switch is bad. This switch completes the cook circuit and this is why it doesn't run. You need an ohm meter to diagnose and find the right switch. Switch failure is caused by opening the door when it is in cook mode. Push the stop button first before opening the door and this failure will cease to occur. BE CAREFUL !!

either the magnatron fried , or the fuse fried... either way the microwve has to be taken down and opened up.
If you have the serial number , GE will send you a replacement magnatron (but will not service the unit for you).
contact GE and they will take care of you... the magnatrons are warranted for like 10 years....

Tom, It sounds like either your magnetron and door switch have gone out or the control board. From your description, I would think that it is combination of the door switch and magnetron, which are expensive to replace - are you sure you want to put that type of money into a 9 year old unit.

http://www.searspartsdirect.com/partsdirect/part-number/Frigidaire-Parts/Microwave-Parts/5304408930/0022/628/Model-CPLMV168CC1/1428/0123370?keySuffixId=NA&productTypeId=0123370&searchModelNumber=CPLMV168CC1&subCompDesc=Functional%20parts&brandDesc=FRIGIDAIRE&modelDesc=MICROWAVE&blt=11

And the door switch parts are even higher.

Burnt wires or connections at or bad door switch.

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

Microwave Oven Basic Troubleshooting Tips

heatman101

Microwave?

Generic advice follows.

Do you open the door while the machine is cooking? Do it a lot? For a long time (months)? Check your door safety interlock switches. The microswitches can not stand that type of abuse. I have personal knowledge on this. I try not to open the door until it stops, but it is hard usually to do that!!!

If you need more help, let me know.

a

All lights are operational. Model number is FMV156DBC.

The simplies is the fuse, which is located inside the unit, you need a screwdriver to open it

this is a problem with your programme timer these can be expensive to replace and because of the age you will probably be better buying a complete new unit as you could repair it and you could come across other related problems and could end up spending a fortune sorry i couldnt be any more help