Panasonic NN A773 combi oven on 240 V. The (internal) fuse blows when cooking (microwave) cycle starts. The oven is brandnew and gave in after about 20 min usage.
I opened the thing up to firdst discharge the High voltage cap, but there is none obviously present?? I have fixed several microwaves but this one seems to be a bit more sophisticated. Is the HV cap integrated with the magnetron?
I have checked the door switches and they seem OK. No signs on the HV board of burning or melting. However the rectifier has no resistance over the AC pins, but looks clean and no signs of any shortcuts while it blew a 13 A fuse in a fraction of a second.
Anyone any suggestions about the HV cap and suggestion what else to check.
gerard