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Thanks for all the informative responses. Lots of good information and scenarios I hadn't thought of.
My candidates are an early 50s Hoffman EasyVision which uses circuitry typical of most TVs made then, and a mid-60s Packard Bell console TV, which I believe uses a modified RCA CTC-17 chassis. I definitely wouldn't try this on a transformerless set without the proper precautions.
Sounds like audio should be easy, but video may be a challenge. Based on what I've read in this thread, and in the article, it appears there is no clear answer to that question. It seems like the simplest approach would be to tap into the video amp and see what happens.
The article was really helpful, and I might be tempted to build one of those circuits if my Packard Bell set isn't plug-and-play, since it gets the most use.
DaveWM - you brought up a very interesting point. It does seem like cheating by eliminating various sections and tubes. Most things I connect to a TV have RF outputs. I find that the most practical way to play classic video games, watch VHS tapes, and use cable TV is through the set's antenna connectors. My main reason for the composite connection is to reduce clutter and make the TV more versatile. Permanently bypassing or disabling the RF/IF sections wouldn't sit well with me, but I would like to be able to plug my DVD player or Apple TV into the back and be ready to go.
-Tim
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