Predicta Tandem restoration

[bandersen]

There is some geometry distortion. Primarily the vertical lines bend on the right side.
I don't think there's much I can do about it. I suppose it won't be noticeable when viewing actual programming.

[Kevin Kuehn]

Originally Posted by bandersen

There is some geometry distortion. Primarily the vertical lines bend on the right side.
I don't think there's much I can do about it. I suppose it won't be noticeable when viewing actual programming.

That almost looks like stray magnetic field interference. Did you try moving it around in the room?

[dieseljeep]

Originally Posted by Kevin Kuehn

That almost looks like stray magnetic field interference. Did you try moving it around in the room?

What about the adjustments on the yoke cover? I don't remember if they're just for centering. The "T" shaped magnet, on the side of the yoke should have an effect on the pincushioning.

[bandersen]

Originally Posted by Kevin Kuehn

That almost looks like stray magnetic field interference. Did you try moving it around in the room?

Yeah, that has no effect. This is a rebuilt CRT and the neck is a little crooked which may be throwing things off.

Originally Posted by dieseljeep

What about the adjustments on the yoke cover? I don't remember if they're just for centering. The "T" shaped magnet, on the side of the yoke should have an effect on the pincushioning.

A little. Mostly it effects the horizontal linearity.