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This is making my head hurt... I have never seen anything like it before!
So you get the same color pattern with any gun turned on? or does the pattern change?
The moire' pattern produced here makes me think that the shadow mask is totally out of alignment with the phosphor dot structure, as if one of the support springs has become detached, and the entire mask structure has moved back. The fact that the repeating patterns in each color bar become larger toward the bottom of the screen suggests that the mask is perhaps tilted further from the screen at the bottom. All this is purely a WAG, as I have never seen this occur.
If you lightly tap the screen, do the colors move around? If the shadow mask was torn, you might observe a fair amount of shifting of the pattern.
jr
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