I have a Sony PS-X6 Record Player ( A turntable - yes, I am old!). The turntable has a strobe light to show if the speed is in sync. The table is turning out of sync. Its like the speed is varying both at45 and at 33 rpm speeds. Please any help on this problem will be appreciated. I don't have a Sony shop close by, but I am a bit handy with electronics and I hope with some help I can fix this.