My Brand New CTC-7!

[SwizzyMan]

Ok will do that next time. Now my question is what is causing the poor horizontal lock and how can I fix it? I have recapped the horizontal board and have put a new tube in and replaced an open IF cap and still I have very poor hold and the picture is bending near the top. ie. the vertical bars on the crosshatch pattern are distorted and bent near the top of the screen. How can I fix this? This has been frustrating me very much and I would like to fix this irritating horizontal hold once and for all! Any input is greatly appreciated!!

[DaveWM]

how does it look on reg programming.

[DaveWM]

try not directly connecting the ant lead, so the signal is weaker, see if you get a snowy pic that lacks the bending and other distortion.

[SwizzyMan]

Ran a signal from my BT modulator and received a signal from my rabbit ears hooked up to the set and the picture is kinda snowy but the bending at the top of the screen is a lot less noticeable it is still there though but it is moving very fast as in it swirls but this is not too noticeable the horiz hold still is very touchy and occasionally goes off sync. Funny thing is when it loses sync sometimes all I have to do is give the cabinet a firm hit with my hand and it whips back into place. But regular programming does not cause as many problems as the NTSC pattern generator does to the horiz hold.

[DaveWM]

the touchy control, does it flop both ways easy and if so how much range after it locks.

[DaveWM]

oh and the hooking at the top is pretty typical, generally you can straighten out with the horz lock but that assumes the horz lock is not to touchy. Even then its not uncommon to have the hooking. Could be the antihunting network not dealing well with the powerful vert sync pulse. But it rarely is a prob except when looking at test patterns.

[SwizzyMan]

Flops both ways pretty easy but takes a lot less of a turn for it to flop when I am turning it to the left.I get about a bit over a half turn before I lose sync when I turn the horiz hold to the right and about a quarter turn to the left before I lose sync. This was done with a tv show coming from my bt modulator. The horiz is very unstable and will randomly lose sync at any given time.