JVC tt-101 repair


Got a JVC QL-10 with a 120V TT-101. Speed is wonky. Sometimes plays fine, sometimes spins a 1000 RPM, somtimes runs forward & then backward. Could use some help.
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Chakster, Is there any way to tighten up the rear couterweight shaft. Mine is drooping some.
You can replace the bubber part in that tube, but i've never tried to do it myself, my arm is fine. Anyway all information can be found online. Some people replaced the rubber washer and it wasn't complicated.