Need help with a CTC-15 vertical problem!

[Turle]

Originally Posted by Yamamaya42

If you have checked all the resistors involved, and know that they are OK, and same with all the caps that could be causing the issue, cause they often can be a bit sneaky and leak at operational voltage, and hard to really test unless you have a tester that will push it to it's limits like the vintage cap testers would, but if you are sure the caps are good, and the boost voltage is within the correct range, one thing to try is a resistance test of the vertical winding of the yoke, YEL & YEL-BLK terminals, should be about 23.5 ohms.

Turns out it was the 150k between the height and linearity pot. Looked fine in circuit but pulling it out showed that it was measuring over a Meg. I replaced it and the height works fine now

[Yamamaya42]

Originally Posted by Turle

Turns out it was the 150k between the height and linearity pot. Looked fine in circuit but pulling it out showed that it was measuring over a Meg. I replaced it and the height works fine now

Glad to hear it!
That seems to be a common fault, cause as mentioned, it was also just as bad in my set.

[kvflyer]

Originally Posted by Turle

Turns out it was the 150k between the height and linearity pot. Looked fine in circuit but pulling it out showed that it was measuring over a Meg. I replaced it and the height works fine now

Another congratulations that you found it. Gosh, sometimes we just have to scratch our head!

[zeno]

Originally Posted by Turle

Turns out it was the 150k between the height and linearity pot. Looked fine in circuit but pulling it out showed that it was measuring over a Meg. I replaced it and the height works fine now

Told you so !! Gotta watch resistors in circuit. Low ohms you can get away
with a quick check. The higher ohms you go, the more the circuit
effects readings. Even a slightly still charged cap will throw things off....
Well done !

Zeno
LFOD !