Can any one help me with my CD player? It's a Sony component CD player that uses KSS-240 pickup. My problem is, as soon as the player is powered on, the lens head will be immediately starting whacking up and down, something like machine gun fires. The objective lens overshoots and hits, making a sound somewhere like 10hz beating/whacking sounds. It won't stop until powered off. Does anyone know how I can fix this?

Thanks a lot,

SY