2 things, make sure the back arm weight is adjusted correctly,, allowing enough pressure to be placed on the record, if that doesn't help, you have a chip in the needle thats not visible to the naked eye,
SOURCE: I need to put the belt back on my JVC al-a158 phonograph
To replacea turntable drive belt.Copyright.. Styluscity.com, JohnHarrison. Nov 2011Before starting any work on yourturntable disconnect it from the mains power supply.Remove the stylus or completeheadshell to prevent any accidental stylus damage.1. Remove the rubber platter mat toexpose the platter.
2. Put your thumb and forefinger through the two round holes either side of thecentre spindle and lift the platter off. You may need to give the centrespindle a light tap (whilst applying upward pressure) with a screwdriver handleor some similar tool that will not leave any marks or damage.
3. Remove the old belt and wipe the platter and motor pulleys with an alcoholswab to remove any old belt residue.
4. Place the new belt around the platter pulley making sure it is sitting flatwithout any twists.
5. Flip platter over the right way up. Acorrect fitting belt will stay put and an over belt will fall off.6. You will see 1 or 2 largerectangle or square shaped cut outs in the platter near to the outer edge. Throughone pinch up the belt and slip a finger or belt hook between the platter pulleyand the belt gripping the belt ready to fit over the motor pulley.
7. Align the centre hole of the platter with the spindle and place platter backinto position keeping a grip on the belt.
8. Slip belt over motor pulley and give the platter a light clockwise rotationto ensure the belt is riding correctly.
9. Replace the rubber mat and then run the turntable to ensure correctoperation.MUSIC IS LIFE, LIVE IT LOUD.Styluscity.com cansupply replacement drive belts for all turntables
Testimonial: "Thanks. It worked out great. I appreciate your time and effort."
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