Question about JVC AL A158BK Turntable

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JVC Turntable model AL A1 BKX , need to know how to adjust speed

Put on new turntable belt but sound from speakers shows the speed is too slow. Any corrections that can be made? Ca I get a layout of the proper belt setup?

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I have just fixed this problem on my Aiwa PX3800 with improvisation.
The platter was rotating too slowly, I didn't know how much too slow only that the records sounded wrong.
I imagined the belt, motor and platter as a bicycle gear and so simply increased the gear... I achieved this by winding a thin strip of a electrical insulation tape around the motor head to increase it's radius (like changing up to a larger front cog on a bicycle gear).
I could then time the rotations and remove a layer or two of the tape accordingly until I have achieved a perfect 45rpm. 33 is still way out but I only listen to 45s!
Be sure to trim excess tape from the motor head with a craft knife/scalpel or it'll stick to the platter.
Poor man fix up.

Posted on Dec 23, 2011

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After trying all the adjustments that I could by moving the drive motor around in the available slots I've concluded that my trouble now must be with the drive motor itself. I have clocked the RPM speed in both the 33 and 45 settings and they register well below their requirements. Looks like I will have to check out the motor or just bite the bullet and buy a new turntable as this one is quite old..
Thanks.

Posted on Dec 18, 2008

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