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Here is what I'd to. To get it working as a NTSC set:
1. Finish documenting the chassis as it is.
2. Figure out what it needs for power supply voltages.
3. Figure out how to connect the cut wires.
4. Determine what parts are missing (delay line, etc.) and find replacements.
5. Fire it up as a NTSC set and see if it works. Make whatever alignment changes are necessary to get a NTSC picture.
Then, configure it for CPA
1. Design the missing CPA circuits and install the components.
2. Fire it up as a CPA set and make whatever alignment changes are necessary for CPA.
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