everything working heat,light, etc making very loud whistle noise
what is cause for very loud whistle noise everything functions
"The Magnetron Tube
A growling or high-pitched sound coming from your appliance when its cooking is a good indication the magnetron tube is failing. The magnetron in your microwave is responsible for creating the frequency that cooks your food. In good condition, this device operates silently. Unfortunately, those unfriendly noises your hearing from your appliance commonly indicate the magnetron is burning out. If you choose to replace the part, you will have to call a professional repair technician."
is it worth fixing or should I replace have to pay repair man dispose of old one and reinstall new one