Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Solid perfomance for 3 years

This review is for NN-S560WF which I had for 3 years.No complains but it stopped functioning recently. Panasonic authorized center wants $75 just to look at it. I am going to get a new one for this price. I have also tried to do home repair but this one does not come with a circuit diagram. High voltage generation is done by an electronic invertor assemblly which if goes bad is very difficult to repair. New invertor costs $150 !!!. Most other microwaves use conventional HV units and are repaired easily and parts are cheap.If you are looking for a microwave which lasts longer than this may not be the product for you.