[Yamamaya42]

OK, I attempted again to tune the 1st IF coil and this is what I found.

Following the instructions, and adjusting the “ contrast control point stated to -3v as mentioned caused NO readable voltage at point A, no matter what I did , no deflection was seen, and when a video was fed in, it was cut off completely.

Turning contrast back up to the point the picture came back, the voltage was about -1.4
Point A would then react to the RF input and I adjusted the coil.

This did not seem to help the picture much as after I was done, there seemed to be more RF noise than when I started.

So obviously there are other things wrong with the IF, most likely more bad resistors, and perhaps the bypass caps, setting it to -3v like it says in setup should not cause nothing to pass though.


Also, the black streaking seen on bright objects on the screen is NOT from the IF, as I bypassed it and fed direct video in and it was still there, but as Kevin Kuehn mentioned, it could be caused by the old test CRT and not the video circuits.

but now I must go over the IF section and look for more bad resistors, it's that ot just go direct video input :/