Conference hips::uk_audioo

    The belt of the turntable may be aged too much that it doesn't provide
    enought frictional pull on the heavy turntable i.e. there may be
    slippage between the pully on the motor and the belt. Inspect the motor
    pulley, if your see black dust deposit on it, its propably the problem. 
    
    You may want to invest a few pounds on a new belt to see if its the
    problem.
    
    regards
    
    Samuel

    When I had the turntable in bits I noticed that the spindle didn't have
    any black deposit or such like on it and there wasn't any on the
    platter either and the belt tension seemed fine. Also, it was the spindle
    itself that was going slowly. When the belt was disconnected the
    spindle went faster but didn't appear to change speed when the rpm selector
    was flicked between 33 and 45.Never-the-less I'll keep it in mind and if it
    happens again I'll see about getting a new belt.
    
    Cheers for the input.
    
    The Bishop
                                               

    In this case, I suspect that its the motor which is aged to a point
    that it cannot provide the necessary torque to bring the turn tabale up
    to speed; that's why if you manually turn the table i.e. help the motor
    by providing some extra torque, the turntable works fine. The reason
    for this is that keeping the spindle once its started requires much
    less torque than bring the table from zero speed to the working speed.
    
    On thing you can do is oil the spindle bearing with light weight oil,
    like WD40, be sure you do this for both bearing(the upper and lower
    ones). 
    
    Also unless your table is the kind uses phase lock loop or one of the
    servo speed control technology, otherwise the motor should be turning
    at a predefined constant speed, to change from 33 to 45 there is a
    lever actully moving the belt to mesh with a different radius segment
    of the motor spindle pulley(you can note this from looking for the
    lever and the spindle pulley should have two segments with slight
    diameter difference like two pulleys stacks together).
    
    Hoped this will help.
    
    Tell me the progress
    
    Regards
    
    Samuel

    One thing you forgot:
    
    I had to spin the table ONCE and since then it has worked fine. When I
    stop and restart it again now it goes up to the correct speed. I do not
    have to spin it every time I start it. So far, it has not done it's
    slowing down trick since Sunday night and I used it a fair bit last
    night, but we'll wait and see what happens.
    
    I can also tell you that the spindle doesn't have two segments for the
    different speeds and I would assume it is a servo.
    
    Anyways I've now got a few ideas to play with if it happens again and I
    should manage to avoid taking it to a repair shop. I don't want to lose
    an arm and a leg!
    
    Cheers
    
    The Bishop

    Back again!
    
    The turntable is back at it's slower speed and won't be fixed by
    spinning it and the motor itself is going at this slower speed when the
    belt isn't connected. Can't get into motor bearings cos it has been put
    together with screws that have snap-off heads. i.e. Technics do not
    intend it to be fixed, just replaced! So it's off to the repair man
    unfortunately. I really liked my arm and leg!
    
    Do you think I would be cheaper buying a new �30 stylus for my other
    turntable that was moth-balled when the stylus broke. It's a Pioneer
    PL-6 with a moving coil cartridge and direct-drive. It was a cheapo �60
    job cos it was ex-display and end-of-range about 9/10 years ago. At the
    time I figured I'd be as well buying a new turntable as getting a new
    stylus. I'm beginning to regret it now cos it was a good machine.
    
    The Bishop

    Why not use the cartridge off the SLB2 in the Pioneer?
    
    tim