Since this follows the tube/yoke, I do not agree with the others on
this (unless the chip they describe is part of the yoke assembly).

At first, I assumed you had a mechanical allignment issue where the
blue tube is set too low and you are alligning above the linear region
of the raster. The cure for this is to adjust the tube to point higher
on the screen and re converge.

The correct proceedure is to center the raster on each tube, looking
into the lens, then adjust each tube mechanically for best on screen
overlay coverage, then proceed to electrical convergence.

The nature of the whip in your photo is curious and could be caused by
a shifted linearity magnet, some stray magnetic field or a cap within
the yoke failing. Check the rings on the neck end of the yoke, note
their position and swing them around a bit to see if it addresses the
problem. Look for missing or shifted bias magnets. As a last resort,
open the yoke housing and start replacing the caps inside, clean any
spark gaps etc.

Tom Maguire




On Jul 26, 11:07 pm, "Nick" wrote:
I've got a projection tv here with the blue gun having trouble.

It seems that theres some kind of curl.. or dip in the top. the bottom lines
up perfectly fine. Is this some kind of yoke problem? I can't imagine what
else would affect a tube like that..

The problem follows the tube when i switch the color inputs or the yoke
connectors..

Here's a picture to explain it better.http://home.comcast.net/~slicknick1981/html/monitor.jpg

Thanks for any help,
Nick