Panasonic NN-S953 Microwave Problem

It sounds like a problem with the inverter, control unit (circuit board) or high voltage transformer. I would recommend first that you (or a servicer or electrician) measure the actual line voltage at the outlet. It may be too low, or you may have a tarnished breaker or bad connection between the breaker and the outlet. Then try something like a toaster or toaster oven in that outlet and see if it toasts bread properly. Toasters consume a lot of current, so they are good load testers for outlets. Another good test is a hair dryer. Due to the lethal voltages involved, I do not recommend that a person without training and experience ever work on these models. You should be able to locate a Panasonic-authorized servicer here: http://www.pasc.panasonic.com/WhereTo/FindServicer.asp?Pass=1 I would mention the exact symptom when you call so the technician can bring a new inverter with him when he comes out to repair it. Might save you having it pulled into the shop. Also, you can save about $50 by removing it from the wall and taking it to the shop. It's really a two-person job for safety's sake, and having the original installation info helps a lot. If you still have questions, please feel free to follow up. I appreciate your thoughtful ratings to my reply.