The only one way is we should buy new one device

My disc won spinning too, iv done adjusting lens optic bias and volt, its didnt run anyway… the motor of cd still sleep, but the lens working normaly, itry to connect the 1,5v battery to the motor(dynamo) its working, but when inout it back as default, the motor still sleep… i try many things and nothing!!! should i wasting my money to buy new optic drive set? Or i should smack this thing