WG 19v1001 distorted image

[Paul Olson]

Any idea what would cause this distorted image? I am assuming it is a yoke alignment problem, but I really don't know anything about that. This monitor also has a questionable vertical circuit. I had a vertical line in the center, and couldn't find the problem; all of the transistors in the circuit tested OK. One day it magically fixed itself, and the picture shows what came up then. Any ideas?

Thanks,
Paul

[qrz]

vert position and linearity is off a bit .
position may be an adjustment . linearity will likely be a 'lytic cap that is changing value (in vertical circuitry) .
sudden performance changes that "magically fixed itself" can be loose connections on pcb.
time for a visual inspection of the pcb , and resolder anything that looks questionable....


qrz