Need to adjust the speed every time I turn on turntable


Need to adjust the speed every time I turn on turntable.This is a belt driven Oracle Delphi II with Origin Live motor and Origin Live Control Board and Origin Live Power Supply.  I am guessing it can be the belt, motor, control board and /or power supply.   How do I determine what is not working?
dcaudio
I have been in contact with Origin Live this week.  When they saw the pictures from my setup they said motor and transformer is 15 years old.  Must buy new both control board and transformer.  When I said - has only been used 200 hours.  Do you provide any discount for existing customer they said - read our FAQ.  It must be something else.Any thoughts????
15 years old and only 200 hours.... the filter caps in the power supply could easily be defective as a result (they last longer when charged). It may be that the regulators are unable to regulate the DC voltage as a result.