WhereEaglesDare

Currently I have Power, Gameplay, Sound, but no video. I get a black picture which tells me that the signal is getting to the TV but there is nothing in the signal. http://www.puttheglasseson.com/consoles/odyssey2/repair/index.html It is the American NTSC Version. I have bypassed the RF Modulator by connecting RCA Connectors and I get the same problem. I reseated all the sockets ICs. Any guidance please? Thanks.