HP 8594L CRT issue

[WB8PFZ]

I while ago I purchased a HP 8594L spectrum analyzer with a problem. The screen would show the image but the display was shifted up about 2 inches . The good news is it was an easy fix once I located a bad cap. Now the issue is the displayed image is not plum or square. It is twisted 5-10 degrees from  plumb. There are a few adjustments on the monitor position, brightness, hold and a few others. Does someone know how to twist the image. I thought there was an installation issue but I reinstalled and the same problem. Thanks Mike

[helius]

Most CRTs use magnetic deflection with a yoke around the neck of the tube. This needs to be adjusted by turning it while the picture is visible to present the correct rotation (the yoke is then held in place with dots of lacquer paint).
If the instrument has an electrostatic deflection tube like a scope, trace rotation is electronic and there will be a pot somewhere to adjust it.

[WB8PFZ]

Well the yoke is glued and that does not look like much of an option. Hoping someone knows where the adjustment (if there is one) is. There is a coil with a tuning slug with no marking on the board. All other pots are labeled on the circuit board. Mike

[WB8PFZ]

The display is made by Omni Vision model LP0615E3Y if that helps. Mike

[helius]

A yoke on the tube means magnetic deflection. Maybe there is a shorted turn or a break in one of the yoke coils? That can cause vertical/horizontal collapse, but I don't think I've seen it cause rotation. When you say "twisted 10 degrees from plumb", that could mean rotation, or it could mean a geometry problem like trapezoidal or pincushion misalignment. The geometry is controlled by dynamic circuits that change the deflection timing.

The other part of the magnetic deflection system is the purity magnets for color tubes. Those are placed around the neck, sometimes a pair of ring magnets are used, other times they are small disc magnets stuck on plastic pegs. They don't rotate the picture, but if misplaced they cause color smearing.