My CTC9 made it! :)

[yagosaga]

Originally Posted by Jonathan

I have a Felton. It's an RCA 210-CT-836. Service Manual is 1959 No. T6. I wonder who would have a copy of an RCA service manual 1959 No. T6. Does anyone?

I don't have the RCA manual but the Sams for RCA CTC9A, B, F, H, N, P. It is a paper copy which I got from Steven Kissinger. I can send you a paper copy of it but you have to pay the shipping costs from Germany. Otherwise ask Steve K. for a copy.
Before you start with recapping and so on, please check the crt voltages. crt anode voltage should be 19.5 kv, check it with a high voltage probe (tolerance: 15.5. thu 21 kv). There are two anode connections. Between both there is a resistor with 56 K. Check it. If this resistor had changed its value you will have a bad focus and a low brightness of the picture. Touch the anode connection first with a grounded cable to prevent a shock hazard.
Don't change this resistor with a "normal" resistor, it has to be a resistor for high voltages.
Check the focus voltage (pin 9 of the crt). It has to be 3 thru 3.5 kv. What do you read here?
The other voltages for the crt are: 320 thru 350 vdc for the cathodes (pin 4, 5, 13).
Grid: 580 v for green (pin 6), 280 v for blue (pin 12) and 230 v for red (pin 2).
Screen: 560 v thru 710 v (green, blue red, pin 7, 11, 3). These values might be widely vary, depends on the ageing of the crt.
Like you can see the voltages for the red gun are obvious higher (kathode: lower) than the voltages for the other guns. This indicates that the 21CYP22 needs a higher beam current for the red color than the other guns, even it has a orange-red color which looks brighter than the pure red color.
Good luck and enjoy the time of fixing the set. I think nothing else is more exciting than this time when you hesitate and you don't know what might be the result of your work.