Question about Panasonic NN-T990SA Microwave Oven
Without HV test equipment it is quite difficult to determine if it is the magnetron or inverter.
5 years is a little short for magnetron failure but it appears that this is about all you can expect these days from a magnetron - the best I have seen was 11 years. I have not seen an inverter failure as yet (although I am not a full time repair man). The main reason I suspect it is the magnetron is the short time period from start to stop - it is typical of magnetron failure in Panasonic microwaves.
As regards door hinge side, that is one of the great unknowns. I suspect it comes from most people being right handed but even refrigerators could be specified as right/left hand hinged originally and now can be changed by customers.
Posted on Nov 09, 2008
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