Hi, I have the same issue as the one posted here.
when I open my microwave door the turntable turns (bulb has been gone for a while but I did not care to replace it). My microwave is a Pansonic SN-778S. I opened up the microwave and sure enough one of door switch contact is burnt up (just like the guy in the forum above). I check out the part number it is a Omron V-15G-3C25. I searched for it on Amazon and I come accross Omron V-15G-3C25-K. Don't know what the additional -K means. Any ideas? Both switches seem to be rated 15A, 1/2 HP, 125V, 250VAC and 0.1A. The version without the K seems to have a red button that gets depressed and the one with K has a black button. Otherwise look identical. Thank you for your help