This 'wobble' generally happens on all inputs, so with my PSone I oberserved it with official composite & S-Video cables as well as shielded RGC SCART RGBS SoL cables. The wobble is always on the OSD as well as the console image. All the consoles look perfectly fine through an OSSC with zero movement on static images, so it's not a fundamental defect with the sources.
Here's a quick list of sources / TVs / cables etc. that I've recently observed. I've got more, this is just what I can recall with certainty right now.
- Sony FX30 (No 1) FE-2 Chassis | Medium-High Wobble
Seems to wobble on all inputs, tested with a 3-Chip SNES and NTSC-U PSone. Set is in good condition otherwise.
- Sony FX30 (No 2) FE-2 Chassis | None-Low Wobble
Zero wobble on the 3-Chip SNES, couldn't really observe any on the 480i consoles (Wii/OGXB/PS2), very light wobble on the PSone and SMS1. Strange that this one is so much better than the other FX30, it has ~10000 extra hours on the counter, so it's not really about being in better condition.
- Sony X5 & Sony C5 FE-1 Chassis | High Wobble
I own two of these and seen at least half a dozen, they all wobble, every source, every input, OSD, always.
- Sony LT1 FE-2 Chassis | Low Wobble
Haven't extensively tested this one but it wobbles a bit with the PSone over RGBS SoL
- Sony X1 BE-3D Chassis | Low Wobble
Haven't used this TV much this year, but it has very low to low wobble from my memory and shows a bit when I recently used it with the PSone
- Sony FQ10 BX-1 Chassis x2 | High Wobble
I tried two of these, very recently manufactured with incredibly low hours, looking like they were just unboxed. Didn't mess with them much yet, but with the PSone and 3-Chip SNES they have severe wobble. Perhaps the worst I've seen.
I'm curious why this defect seems to happen. Haven't seen it on PVMs or things like a Commodore Monitor or any PC CRT. Just consumer Trinitrons. It's interesting that it sometimes varies between consoles and that I own one TV that has basically none, puzzling. Something strange I've noticed is the worse a set has the wobble the worse the color bleed pattern in the 240p testsuite looks:
Spoiler
I wonder if there's something that can be adjusted to reduce this wobbling. There's untold amounts of undocumented options in the service menu and I wonder if there's some kind of phase or alignment that can be tweaked. Any adjustments to geometry, focus, G2/screen, dynamic convergence, static convergence, yoke position, magnetism and positioning etc. ever had any effect on this, as far as I can tell.
Edit:
Here's a static picture of the wobble:
Here's a video link:
https://imgur.com/a/HVGLwBQ
This is from an X5, I've seen half a dozen and they all look like that with every source, every signal type, in different locations and circumstances, all settings I tried and the wobble is on the OSD as well. I'd rate this wobble 'High' on the Richter scale of Sony Wobble. Make sure to watch the whole 10s video, it sometimes comes in waves-o-wobble. Also I'd say it actually looks worse in person because you see the whole screen and there's always something wobbling in the corner of your eye.