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First, make sure the 6GF7 cathode cap has been replaced. For the 50uF, use a 47uf - works well in my CTC16. Second, the 5.6K cathode resistor is known to cause shrinking problems.
Lastly - look at all the resistors in the 6GF7 area - lots of heat, and they tend to drift. Metal Oxide types work well as replacement. As my Dad use to say, any resistor in the vertical circuit of an RCA is suspect.....many service notes point to the higher - k ohm resistors in the horizontal as well. Check and replace any valued at 100K or higher - the 150K's in my CTC16 height control circuit were all swapped at some point.
__________________
Brian
USN RET 22YRS (Avionics/Cal)
CET-Consumer Repair and Avionics ('88)
"Capacitor Cosmetologist since '79"
When fuses go to work, they quit!
Last edited by Findm-Keepm; 10-04-2016 at 08:00 AM.
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