Hello,
I have a black panasonic inverter microwave that had smoke coming from the side. I took the cover off and plug’d it in again and put cup of water inside and turned it on. Again the smoke started from where it says danger…LOL at the bottom right hand side. I took the plug out and now deciding if this is something I can fix. I’m handy for a woman with a mission to fix 
How expensive is it ? is it a whole piece this white section of electrical bits’n pieces.
Do Not by any means go poking around in there , if you connect with the high voltage wires / connections we may not see you here again , there are deadly electrical components in there