I know in general microwaves should be replaced, but this issue is so odd to me that it seems fixable. If I apply pressure behind the panel above the lamp it works fine, nothing else is wrong as far as I can tell. it was a $300 dollar microwave so its not so cheap to just replace with a like-model. I was thinking of bringing it to some appliance repair place instead of them come out to me, show them the problem, hopefully fixable under for $130ish? would be my limit. Without pressure its completely dead. Panasonic NN-SV79MS
This is likely a connection or board issue, but it would need to be disassembled to determine, just be careful as there are components in the mw that stores voltage so you can get shocked even with it unplugged. if a board issue this will NN-SV79MS be above your limit.