I have 4 of the TS-929 sets - 18" & 19". Picture wise, by the time 3 of them got to me, the picture tubes were definitely showing their age. With a little effort, I could still coax a nice picture out of them. Just hard to get rid of the strongest gun showing up in the white highlights. The forth set has a strong picture tube and an excellent picture!
Your TV looks to have a high voltage rectifier tube? That would make it one of the early 929's. Later sets had the solid state rectifier. I have tons of parts for these sets, so if you need anything to get it working just let me know.
I have a classified ad on this site right now, for several complete sets - 18", 19" portables and 23" & 25" consoles. All are Motorola Quasars.
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