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well the tuner issues is popping off station, TV turn off and back on just strange things. when RCA built the sets they used solder that was not the best quality and poorly soldered the grounds in the tuner. the solder will break apart and cause the voltage to go crazy and the microcomputer to change data in the e prom where the data is stored and the e prom would go bad.
from what i can tell it needs a setup, but 99% of the adjustments are the serve menu, but i suggest turn the picture control or contrast control down until it stops smearing or use s-video. let it play and see what happens.
i looked the model no up and the chassis no is ctc177, maybe zeno or john can chime in.
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