Ok so I had a chance to take it out and yes you were right. Master switch is f***ed. Here's a couple pics. Any idea if I could just get the burnt components? I can do soldering work.
http://imageshack.com/a/img538/3576/AQZzTm.jpg
http://imageshack.com/a/img911/78/nRxicE.jpg
I found this one that is in better shape for reference
http://imageshack.com/a/img832/2312/img30381s.jpg