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What coil did you say was broken? If its on the IF board, you may not need it if you are going to convert to A/V input.
For a video input, you can use a video buffer IC or you can use 2 transistors. One transistor will not do it since you need more than 1V of video. An emitter follower will give non-inverted video but with no gain. So you will need a two transistor design called a compound pair.
Here's the circuit I used.
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Last edited by kf4rca; 12-27-2016 at 09:06 AM.
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