Ive got a 4 switch Atari 2600 woody that refuses to show any signs of life. I've swapped all 3 chips, ive checked voltages at the power jack.. the transistor and the rf modulator. I even did an AV mod (done several from scratch) and still have nothing. No video or audio signal of any kind. I've done several av mods on systems that my wife has had from childhood.. beat up and rusted but still work great. She got me this one as a surprise as it looks brand new but is dead. Any help would be appreciated... thanks!!