My CTC-16XL Project.

[Yamamaya42]

Originally Posted by old_tv_nut

This should work, as the delay line and L13 are essentially a DC short. Don't bother trying to replace L13, it's purpose is to improve the transient response of the delay line, which you are bypassing anyway.

The dangerous part is connecting to V4 pin 3 carefully so as not to short to adjacent pins.

If the cover is not soldered in place, I would try doing this with the cover removed first, see what you get, then decide if you really need to do this with the cover in place.

Did you try the fine tuning yet to see if the transients move or are stationary? If they move, then you know it's an IF alignment issue and not the delay line.

That's sort of two fold, in RF input mode, there is shadows that move with fine tuning, but are mostly seen in the color, if color is turned down, no shadow movement is seen, but there is a shadow also seen in the luminescence that does not move. This is also seen in direct A/V input.

I have known about the set having IF problems that had an effect on the color ( mostly red ) thus set the auto bypass circuit in it via a signal relay at TP1 Point B, direct input does look much cleaner, but still has the same shadow to the right as IF input, if I ever can get the IF aligned correctly someday I can remove the mod.

Shorting it won't be an issue really,
I essentially have an exact copy tube in the GE CTC-15ish clone, that I can take to work and rig up under microscope and make sure it's OK before I put it in.