Look here http://www.philcoradio.com/notebook/41226.htm
Steve
I repaired the power switch on my Philco 41-300 console by drilling out the 2 copper rivets and finding a bad solder connection to one of the switch contacts. I had already used Caig on it, but it was still intermittent. It was really tedious to reassemble it properly, and I spent a lot of time figuring out how to fasten it back together - I think I might have ended up using a short 2-56 or 3-48 screw on one side, and steel wire on the other. It was tedious, but I saw some intriguing switch innards, and respect for that robust but simple Philco switch.
Eddie