I was just playing very old VCR home movies and everything looked ok but now there is nothing but snow with sound.
I have two newer VCR/ DVD combos and this has happened to both of them and I don't know whats causing it.
Its not the tape because I put in one video that was ok and now it doesn't play either.
I've tried using a head cleaner but had no luck.

Did I ruin the heads some how?
Is it something to do with a demagnetized head?