Panasonic Microwave NN-SD670S starts and shuts off after 3 sec

[buefordTJ]

Model Number

NN-SD670S

Brand

Panasonic

Age

6-10 years

After entering a time and pressing start, the turntable rotates, light is on, fan is running all for 3 seconds and then it all stops. Panel still has electricity as the clock is still visible and ticking.

I've repaired this sucker at least 5 times - door latches, burnt relay switches. Not gonna let this thing go to the landfill if I can help it. Thanks in advance for any tips on where to start checking.

 

[rickgburton]

Not gonna let this thing go to the landfill if I can help it.

OK, how much are you willing to pay to keep it out of the landfill? Repaired 5 times? At some point you're throwing good $ after bad. The problem sounds like a board issue or rather a relay on the board. Sounds like you're losing power on the primary side of the HV transformer and that comes from the board.

 

[buefordTJ]

I know but the repairs maybe cost me $40 since 2011 when we first bought it. Transformers too expensive it seems so looking for a new one. Thanks for the tip!!

 

[rickgburton]

Anytime!