Welcome to the ARF forums ! !
Your question isn't really transistor radio related.
Perhaps one of the moderators can move it to the Antique Television Forum?
Not trying to be mean, but I don't really understand what you're asking.
If you've got an intermittent switch, it should clean up with isopropanol
alcohol and a Q-TIP, (or you could go to Radio Shack and get some contact cleaner).
Either way, moving the switch back and forth with some kind or cleaning solution
should bring the contacts back to normal.
Hopefully, this helps. But if not, please feel free to clarify your question.
~ Mitch ~