Out of my huge library of about 8 snes games, Yoshis Island has this green vertical line problem on the file select screen, it wouldn't be a problem, but when I pause the game and exit the pause menu, this happens:
A minor nuisance, but last time when I tried to do a playthrough of Yoshis Island, the game instantly went black, and when I went to turn the game on again all my save files were deleted )=
I cleaned the outside of my cartridge (the bottom of it only since I don't have a special screwdriver to open up the SNES) but the problem still there =O.
Is it a problem with my SNES or my copy of Yoshis Island?
Why is it doing this?
Thanks.

A minor nuisance, but last time when I tried to do a playthrough of Yoshis Island, the game instantly went black, and when I went to turn the game on again all my save files were deleted )=
I cleaned the outside of my cartridge (the bottom of it only since I don't have a special screwdriver to open up the SNES) but the problem still there =O.
Is it a problem with my SNES or my copy of Yoshis Island?
Why is it doing this?
Thanks.