Panasonic NN-SD987S Microwave - Wire At Primary Latch Switch Burned Out

[banamber]

Model Number

NN-SD987S

Brand

Panasonic

Age

6-10 years

About a month ago my Panasonic NN-SD987S microwave stopped working. The problem was the primary latch switch (P/N J61415G10XN / V-15G-3C25). The top terminal was cooked and the switch was blown out. So a couple weeks ago I replaced the switch and put a new female spade terminal on the burned wire.

Flash forward to today. Microwave stopped working again. Took the case off, and the wire that I put a new spade terminal on was fried. So I yet again replaced the spade terminal. I have a sneaking suspicion this is going to happen again.

Obviously somehow too much current is getting to that switch causing the wire to act like a fuse. Anyone have an idea of the ultimate problem? Thank you.

 

[rickgburton]

So I yet again replaced the spade terminal.

Cut the burned wire back until the wire strands are shiny and not dull. Solder the terminal to the wire. Use high temp wire terminals. Make sure the connection on the switch is tight

 

[banamber]

Sorry, I had stripped the wires back both times. I thought it was a given.

 

[rickgburton]

Can you post a copy of your wiring diagram here?

 

[banamber]

Sure, here you go.

 

[rickgburton]

Obviously somehow too much current is getting to that switch causing the wire to act like a fuse.

Not obvious. If it was high current causing the problem the fuse would open. It sounds like a poor repair job. Re do the repair and try it again.

 

[banamber]

Not obvious. If it was high current causing the problem the fuse would open. It sounds like a poor repair job. Re do the repair and try it again.

Will do. Any idea why the switch itself initially failed though? Just age perhaps?

 

[rickgburton]

probably