I have a Zenith Moderne Z565 record changer.
When I got the unit I immediately ordered a new idler wheel, lubricated the arm and platter mechanisms, and took apart and lubricated the electric motor. Later I changed out all of the resistors and capacitors. It worked perfectly for about 5 months, until it started slowing down.
I have a single, very dry, gas heater in my apartment. It's in the same room as the turntable. I started to suspect that I'd used the wrong oil on the motor and that the dryness and temperature fluctuations had started to solidify the lube, so I took it apart, cleaned and re-lubed the motor using a light turbine-oil.
The speed improved for a couple months and now is very slowly degrading. If I had to guess, because I don't have a strobe, I'd say it's playing at 29-30 rpm.
Does anyone have experience with an issue like this?
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Topic - Record changer slowing down - Josh Thorne 19:26:04 04/05/17 (3)