Technics SL-1200 Turntable "judders" Questions

has anyone else had the problem with their 1200 technics,where the turntable doesnt spin,it judders back and forth?? 1, The regulator circuit has failed, usually transistors Q2, Q3 and zener diode D3.

My turntable judders when playing a vinyl.I have tried a different drive belt and a different platter,but that has not helped.I am transferring my vinyl to mp3 so I need a solution.The turntable is ...