Start with the lube and proceed to the belt. I think keeping the bearing lubed may be the most overlooked "tweak" or maintenance procedure. Throwing a few drops of factory-approved oil in the bearing made my near-new Technics SL12x0 spin much nicer and a little quieter.
Belt wear and slippage is a continuous process and usually doesn't get addressed until it's obviously audible. By then it makes the turntable sound like it's seriously broken. But one would think intuitively that a belt could wear and slip the equivalent of .18Hz over time, and one wouldn't notice unless strobing it.
Belt wear and slippage is a continuous process and usually doesn't get addressed until it's obviously audible. By then it makes the turntable sound like it's seriously broken. But one would think intuitively that a belt could wear and slip the equivalent of .18Hz over time, and one wouldn't notice unless strobing it.