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JVC turntable AL-E300 turntable slowing down when tone arm moves iacross

JVC turntable AL-E300BK I have just got this out of storage (yes in my shed!) and I tested the turntable manually and it worked fine. Then I tested the push-button start/stop button for automatic tone arm function, and now the arm moves across with the turntable spinning at the correct speed. But when the tone arm gets to the correct position and lowers itself onto the disc, the turntable suddenly slows to a snail's pace. Now the turntable isn't operating manually either. I would be really grateful if there is anyone out there who can help with this. My daughter was so excited to be able to play my old LPs but is now very disappointed. The band appears to be in good condition. I wonder if I inadvertently moved a switch when I was cleaning it, but I can't see anything I could have moved. Same problem on 33s and 45s. Thank you.

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  • Jallen Nov 23, 2013

    Grognard - thank you very much for your response. I just gave it a light dusting and didn't use any solution. It seems really strange that the turntable is spinning at the correct speed until the tone arm lowers itself, then the turntable suddenly slows to around 10rpm. Thanks again.

  • Grognard
    Grognard Nov 23, 2013

    I don't know how the anti-skate controls work on yor E-300 but you might want to see if setting that back to zero (or whatever the minimum is) helps. You might also want to make sure that the mechanism that puts the tone arm onto the record is completely disengaging from the motor when the tone arm is down. Does the turntable slow down even when you place the arm on the record manually? Does it slow down whenever the tone arm is over the platter even if the arm isn't lowered?

  • Jallen Nov 24, 2013

    Hi Grognard

  • Jallen Nov 24, 2013

    I don't think there is any anti-skate control. Presumably I would have to open it up to see if mechanism is disengaging from motor? The first time I tested it was manually and it worked fine. Then I tested the auto arm button and I had the problem of it slowing right down as soon as it reaches position, whether tone arm is up or down. Unfortunately the manual function no longer works at all. Thanks again for taking the time to help!

  • Jallen Nov 24, 2013

    PS. Manual operation worked before I tested Auto but not afterwards.

  • Grognard
    Grognard Nov 25, 2013

    The pictures I have seen of JVC turntables (I've always owned Toshiba or Marantz, sorry) have an anti-skate control knob on the base of the tone arm. If yours doesn't have one, the anti-skate might be a large weight on the end of the tone arm away from the platter. The anti-skate is essentially a counter balance to try to keep the stylus pressure on the record to a minimum but not so little as to let the tone arm "skate" across the record due to paralax forces (don't ask). Yes, you would have to open the the case to see of the automatic movement is disengaging from the motor. To fix this problem, if it is not the anti-skate, you will probably have to open the machine.

  • Grognard
    Grognard Nov 25, 2013

    Since the turntable worked okay before you tried the auto, it's very likely that whatever mechanism there is that moves the arm is bound to the motor somehow and causing the slowdown. There is very likely a small spring in there that is supposed to pull the arm movement gears away from the motor drive when the arm is in place that has either broken or cannot overcome aged, gummy lubricant. I'm sorry I can't be more help, Jalen, but without opening up the box I don't know what else to do. If you were my neighbor, I would certainly try to get this straightened out for you; it shouldn;t be too complicated once the box is open and the problem identified. Good luck!

  • Jallen Dec 01, 2013

    Thank you very much for your advice Grognard, I really appreciate you taking the time to help.

  • Grognard
    Grognard Dec 01, 2013

    My pleasure, Jallen. That's why I'm here! :)

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  • Expert
  • 126 Answers

Even if the belt looks fine it's almost certainly the problem. You mentioned "cleaning" - if you got any kind of fluid on the belt it might act as a lubricant and reduce the friction between the belt and the drive wheel, causing the turntable to slow when the tone arm puts a drag on it. The problem may go away when the belt dries out.

Posted on Nov 23, 2013

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Posted on Jan 02, 2017

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djproaudio
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SOURCE: JVC AL-E300 Turntable

More than likely your motor might be bad. There is nothing else that controls the speed. Are you sure you purchased the correct size belt? Turn on the unit, without connecting the belt, and touch the motor shaft, and see if it fluctuates. You can also just get a marker, and marker a point on the motor shaft. When you turn it on, it will act as a visual indication as to it's speed.

- Davis
DJ Pro Audio
www.DJPROLAB.com
www.DJPROAUDIO.com

Posted on Aug 08, 2008

djproaudio
  • 515 Answers

SOURCE: Tone arm won't drop

This is a tough one. There is usually a series of gears that function in unison to make all the magic happens. These gears are usually set in motion by a smaller belt located inside the unit. If this belt has come off or is damaged, your unit will not work. Or, if the gears have cracked, or dried up, same issue.

Suggest taking it to a service center for repair.


- OPTiC
Turntable Technician
www.1200s.com

Posted on Sep 08, 2008

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JVC - problem. The turntable does not move,


Most modern day turntables are semi-automatic. You move the tonearm from the rest post
over to the record and the platter will start turning. There is a small microswitch inside
either below the arm base or near. There should be a flat bar connected to the base of the arm
and this will actuate the microswitch. The switch is wired in series to the rotation motor.

Solution: 1. Obviously verify the belt is on. Take off the rubber mat and rotate the platter.
The rotation motor is on the left and it has a small brass spindle. The belt should
be visable through the holes in the platter. If not pull the platter gently up, there will
be some resistance. The belt wraps around a smaller inner ring on the underside
of the platter and the rotation motor spindle. If it is degraded it will be stuck to the
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2. Obviously check power.
3. Check the microswitch, it should "click", verify with ohm meter.
4. Some turntables have a "cut" or stop function. The arm must return first to rest before
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Tone arm won't drop


This is a tough one. There is usually a series of gears that function in unison to make all the magic happens. These gears are usually set in motion by a smaller belt located inside the unit. If this belt has come off or is damaged, your unit will not work. Or, if the gears have cracked, or dried up, same issue.

Suggest taking it to a service center for repair.


- OPTiC
Turntable Technician
www.1200s.com

Aug 24, 2008 | Audio Players & Recorders

1 Answer

JVC AL-E300 Turntable


More than likely your motor might be bad. There is nothing else that controls the speed. Are you sure you purchased the correct size belt? Turn on the unit, without connecting the belt, and touch the motor shaft, and see if it fluctuates. You can also just get a marker, and marker a point on the motor shaft. When you turn it on, it will act as a visual indication as to it's speed.

- Davis
DJ Pro Audio
www.DJPROLAB.com
www.DJPROAUDIO.com

Aug 07, 2008 | Audio Players & Recorders

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