Panasonic NN-T888S Convection/Microwave Oven "50 year old circuit breaker" Questions

...old circuit was also on a 15amp breaker. Any ideas as to the cause of the greatly reduced power output? I would be sure to check the microwave's outlet under a load. One good way is to use a toaster ...

...old? > We have been checking our electricity units Not sure how you are checking but your microwave would blow fuses or trip a breaker if it was drawing more than it did since they are only ~ 50% ...

50. Old one was not worth fixing - parts and labor wise - even though it was my labor. If yours is a high end priced unit you may want to take it in to an authorized service center if the repair price