Question about Panasonic NN-H664 Microwave Oven
I would say it has an Invertor Board fault.
There are no serviceable parts so call a Panasonic engineer for repair.
Posted on Mar 25, 2011
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Posted on Jan 02, 2017
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In most cases, this is a problem with the inverter or a bad magnetron.
Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.
I would recommend that you contact your nearest Panasonic-authorized servicer. You can find one here:
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