See
this video of the symptom. The video shows a 240p resolution Playstation 1 game, connected to the TV over high quality component video cables (ypbpr), and the game is paused. The image is supposed to be completely stationary with no movement, no animation, but the blue clothing of the character is clearly jittering or shaking or rippling left and right. I have tested this exact same set up on other CRT TVs that I own, I have confirmed there is no movement in the image. On the other CRTs that I own, the character’s blue clothing does not move or animate.
I thought it might be a bad liquid electrolytic capacitor, so I replaced every single electrolytic capacitor, and tested to see if the issue was fixed. The issue persists even after replacing all of the electrolytic capacitors.
There are no other issues with the TV. The jitter seems to be the most pronounced where the scanline is brighter. In the video linked above, the character’s blue clothing is very bright blue and the jitter is very clear. For bright red the jitter is slightly less obvious, and for bright green it is the least obvious. However, the jitter does exist for red, green and blue, though it is the most pronounced for blue. White uses all 3 colors so bright white is also as noticeably jittery as bright blue.
I thought it might be an issue with the horizontal deflection circuit, so I used the 240p test suite to display horizontal white lines for each illuminated scanline in a 240p resolution, and then I tuned the horizontal position in the TV service menu to see if the edges of the illuminated scanlines jittered at the left and right ends of each illuminated scanline and there is no visible jitter! This suggests the issue is not with the horizontal deflection circuit because otherwise the ends of the illuminated scanlines would stop and start early and late with the jitter.
Is the issue with the RGB color signal path? I am new to CRT repair, so any tips on how to approach this would help.
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