Why does the turntable on my JVC AL-E300 stop when the arm drops on to the record. Just changed belt.

see if this link helps you out. Tips for Repairing Your Home Turntable ..
or this one.. JVC AL E31 Turntable doesn spin automatically Google Search

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.

The only thing that might cause something like that is a build up of static. You can buy anti-static products for records and turntables. I tend to use an anti-static spray which also cleans the records.

Its going to be a belt or motor issue , first,, check to see if the weight on the rear of the needle arm has shifted and is placing too much pressure on the needle,, I doubt thats the cause ,, but it happens,, .check your belt for proper fit,, it should be snug,, , with the belt off, turn the unit on,, see if the motor has any pull left to it,, keep in mind its a record player not a hemi,, belts on line for this product run from 4.00 to 15.00 so shop around

I have this exact turntable. If the tone arm looks like it's not moving or not moving fast enough, it will make the record skip. It is NOT the turntable drive belt that is bad. It IS a 2nd belt that makes the tone arm assembly move. That belt is only about 1 3/4" diameter. I have yet to find one for mine. Turntable drive belts are readily available, but not this belt for some reason.

arm lift mechanism not dropping full extent

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
platter or fall apart. Generally there 3 common sizes. ( 21.4 / 23.6 / 25 inch) they
readily available on E-Bay, search term "turntable belt".
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
starting again, again the microswitch is the trigger.

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

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

The problem is probably the belt. When a belt gets old it tends to stretch and/or get stiff. Listen to see if you hear the motor turning. If it comes on when you lift the arm, it is not the switch.