i have a problem with the slide on my 4002. when i press start all is fine until the record wants to start.the motor starts to transverse the slide but it comes to a stop.i had my meter to check the voltage and i found it fluctuates between 1.5 v and 0.53v. ending with 0v.i can't get any voltage in the middle of the record [by using the forward and reverse buttons] but i can get 0.5v towards the end of the record. i have adjusted everything in my limited fashion so,can anyone help me?bearing in mind that i am a complete novice!