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This set needs a flyback transformer p/n 262342, and a horizontal output IC, location number on the board is q14401 and crosses to NTE2353. When you're in there too touch up any bad solder joints you can find. Fixed several of these with the same problem.
Look for bad solder connections on the solder side of the board: You have to take board out of the plastic and slides out. Look around the high voltage transformer pin connections and large transistor associated with it and all connections associated with it too. Use magnifying glass. Could be hard to see. You could also shotgun the whole section by just soldering all associated connections. Look for burned connections also.
Well let me take chance on this one for you. Who is repairing this tv for you? ???????? Briefly this should work. First solder a jumper under coil #L14401 to R 14402 [100 0hm 1/4 watt resister] these have the same ground. Second .....solder a jumper [other end of same coil L14401] to the solder spot located between J and L...also the same ground. This is kind of tough to explain.Hint....This coil L14401 has enough of a leg on either end to solder to the nearest common junction ground. Unless you enjoy listening to old time radio.....this unit can be repaired. Take this note to the repairman and tell him how to do it!!!!!!!
You didn't say whether the screen is black or not.
If you have a black screen you may be loosing horizontal drive. There is a small inductor (coil) which is in series with the base circuit of the horizontal output transistor which may have a bad solder joint causing your
You probably need to have a tech check it for you. A lot of RCA's have in the past had bad solder joints.