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You picked a good time to start this topic. I have been wondering how to improve the picture on the RCA color TV I recently finished restoring. It is a GG589M with a CTC-16X chassis. It has poor or nonexistent DC restoration. I also have an RCA combo radio/phono/CTC-16 set that I thought had pretty good DC restoration, so I briefly looked for differences between their circuits and have not found anything obvious yet.
Depending on what comments other VK members have, I would rather avoid using an IC in an old TV set, but if a silicon diode would be suitable, that would be OK since they are commonly used to replace selenium rectifiers already.
There have been several discussions of DC restoration in older color sets in the last few years, including one that really improved a GE Portacolor TV if I remember right. That circuit used a diode and a couple other components, I think. It seems to me that the discussions have all been in the rectangular-screen forum. I will add links to anything I can find.
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Chris
Quote from another forum: "(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did."
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