Black6104

I've been looking online now for a while trying to figure out whats wrong with my intellivision, but i haven't had any luck. So im gonna ask on here now. When i set it up, the TV will display either a black screen, or it will go through Static in this order - Thick Black and white Lines, Medium Black and white Lines, and then Thin black and white lines. It does that a few times before switching back to a black screen. It does react to the reset button, and the mother board is getting power. I have no idea what is wrong with it. It had been working fine up until a few days ago. Any ideas?