Linn lp12

I recently installed a new motor in my Linn thinking that was the problem. Apparently not...it will not start unless I manuely turn the platter and bring it up to speed, otherwise it just humms. No good stereo shops in my area...any suggestions? Have it in a shop here now, but not to confident in their ability. They have never seen anything like the Linn...not good. They tell me it would help if they had a schematic...don't have one...help! lol..this is not good.