I got an old odyssey 4000 from an attic a month or two ago, and I've been trying to get it working. I have the service manual and I made an attempt at an av mod based off of a thread I read here. The audio works, the system starts, and it seems like the game is running, but there is no video output to the tv. There is also not the voltage the service manual says I should have at the video out pin, or anywhere I can tell it connects to. Can anyone advise on what to check?