Microwave not working although oven & grill ok

Sorry about my last reply I just saw your model.

I have found that some older microwaves (the cheaper ones like under $250 au) use sub standard parts. The heating motor in these units simply wear out. Honestly it would be cheaper to go out and buy a new cheap unit than to get it repaired as the parts for these units are very expensive.
These items are clasified as disposable units. Where to but a new unit may cost $200 anf the replacement part may cost $150 and then you have the cost of labor of a Microwave specialist installing it. Which I would not attempt yourself as if it is not installed correctly or the unit not put back together correctly could cause harmful microwave leaks during operation.

Sorry about my last reply I just saw your model.

I have found that some older microwaves (the cheaper ones like under $250 au) use sub standard parts. The heating motor in these units simply wear out. Honestly it would be cheaper to go out and buy a new cheap unit than to get it repaired as the parts for these units are very expensive.
These items are clasified as disposable units. Where to but a new unit may cost $200 anf the replacement part may cost $150 and then you have the cost of labor of a Microwave specialist installing it. Which I would not attempt yourself as if it is not installed correctly or the unit not put back together correctly could cause harmful microwave leaks during operation.