Dang it. One of my DZ1200 has a wobble when playing a track. It makes the noisemap wobble too. I can hear it when playing the noisemap but I can't see it on the stroboscope. Putting the player in straight CD mode plays fine so it's definitely the interface between the scratch platter and the spinning platter.

Maybe worth trying a clean up?

So this sounds like it's usually two things, either the plastic encoded disc is warped or the sensor reading it is misplaced/angled.

Yeah, it's a damaged flywheel. The plastic disc it uses to get positional data from. It's actually scratched by the look of it.

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