This has been happening for a while now. My SNES doesn't always boot right the first time; sometimes it just doesn't boot, and other it garbles the game. Whenever this starts to happen, it wipes my saves!
I know there are some threads about it, but I didn't find one about the SNES specifically. I also know there's some obvious safeguard that envolves reseting the game before turning the console off, but for some reason I'm not 100% aware of it.
Anyways, if any of you guys have a solution for it, I'd be very pleased. I found out today that I lost my Zelda LTTP save (while testing a pad that I'm giving away to a friend), and I was kinda far through the game!