[quote name='kaw']This is one of the first pieces of electronics I ever took apart and was actually able to fix. I would check where the A/V connection comes into the Intellivision. Take it apart and check the solder points near the of that part.
The problem I had was with the AC adapter, and I had to resolder the connection where the input is. If I remember correctly (I probably don't it, it was over 20 years ago!) there was a metal housing that surrounded that AC connection that had to be pried up in order to look. I doubt the A/V connection has that, but the solder joints may still be weak from being old and physically stressed when something was plugged in.[/QUOTE]
If I had more time I'd probably invest some manpower in trying to fix it, just for fun. Right now I'm in the process of moving and getting ready for a baby so it's just sitting in my living room getting in my way.
I've been trying to find someone to take it off my hands cause I really don't want to toss it out, but no takers so far. Unfortunately it's not in the best condition and some of those side buttons on the controller seem to be stuck in.