Hello everybody, I love playing my 2600 games. I had a 2600 for awhile, the screen was black and it mysteriously stopped working. I bought a new one, it's a 4 switch one. I noticed when I play games on it it's usually fine at first, I played 3-4 games of Centipede earlier. It started flickering really bad and it went gray but you could still see the picture but it was really distorted. The audio doesn't seem to be affected at all. Should I get a new power source? Tighten the cord? Clean the insides? Any help is appreciated. Thanks for your time.