I'm new to turntables and vinyls. Recently (5 days ago) I bought a second-hand DENON GT-700 turntable. Looked undamaged and overall condition impressed me.
However, it has some serious issues when it comes to playing records. I was unable to achieve constant speed of the plate no matter how I tried to adjust the speed by using manual speed control button (I don't know the correct name for this control element). The speed was varying randomly - speeding up and slowing down even after an hour of using. Furthermore the turntable runs faster then i t should be all the time - I was unable to get 33 1/3 rpm at all, usually I got 45 rpm instead. When I switched to 45 rpm the turntable was again running faster then 45 rpm.
I would be very grateful to hear any recommendation, advice or information on how to correct this behavior.
Thank you all,