I have a rowe 200 disco, ran good for 2 days after I purchased it, left the unit on both days..when I went out to work on it the slection said, select a new record..it would do nothing! Record spins,if I manually turn the gears and the needle sets down it plays..wont do anything after that..I have to rotate the gears again to put the record back...any ideas? I think I can troubleshoot with help here and not have to pay $70.00 an hour..not cheap but could run into money I don't have.Purchased a new manual on it..diagrams,trouble shooting, etc. I know nothing of boards,diodes..etc..I am trying process of elimination...can anyone tell me what or which piece I should pull and get checked first? Thank you..it's a r-83 Disco 200, 1979 I think.