1. I found a SNES cartridge, Super Mario World, which does not work. I cleaned the contacts, but still nothing. If the battery in that cartridge is dead, will that stop the cartridge from working?

2. Bigger problem is with one of my SNES's, the AC Adapter port. The plastic "male" end inside the port broke off and now the power won't come on. That is really weird because I wouldn't think a piece of plastic would affect power transfer between metal contacts?

What do you all think? Thanks!