Hola!!! I have cleaned plastic gear as here: https://stereo2go.com/forums/threads/sony-d-250-middle-gear-lubrication-replacement.7236 - (there wasn't much grass). It finds its tracks when I change a track to the next one - it goes (the move of the gear is not gently, it stops and go, but it goes)., but When I want to play to the previous track or any of the earlier ones - the laser motor doesn't rotare. laser head doesn't move. If i move the laser head manually to the start location it goes again, but it cant back down. Any advise please? What can i do? kind regards, Tom
Maybe remove all gears and see if the motor will run "backwards"trying to move the sled back to the home position. I guess you realise CDs play from the centre outwards. To drive a DC motor in either direction, typically an H arrangement of transistors is used maybe inside an IC. If one transistor blows you will lose power but only in one direction.
