JVC Turntable won't turn, motor works, can't remove platter
I just bought a turntable at a garage sale this weekend (JVC JL-A20) and I plugged it in and turned it on, and it will not spin when I move the arm over the platter. When I remove the mat and look inside one of the openings of the platter (while plugged in and the arm is over it) I can see a copper looking round thing which is what I believe is the motor, and its spinning and will stop when the arm is placed in its original location. I try removing the platter by simply pulling up on it, however it won't come out. Do you think the only problem is getting the motor to turn the gears? And if so (and if I need to replace the belt), how can I do that and how can I remove the platter? Thanks for your help!
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The platter on the JVC LA-10 does not come off as most turntable platters do. It is attached to the spindle with a Philips head screw.
Here are the steps:
Remove dust cover from turntable. Unscrew hinges and lift.
00.jpg" alt="Remove dustcover at hinges.">Remove dustcover at hinges.
Secure tonearm to prevent stylus damage.
00.jpg" alt="Secure the tonearm.">Secure the tonearm.
Remove slipmat from platter.
00.jpg" alt="Remove slipmat.">Remove slipmat.
Turn the turntable on its side and remove screws that hold the top to its base. Remove platter by unscrewing the bottom plate from the turntable. The spindle bearing is held in place with a Philips head screw. Loosen it and the platter will separate easily from the spindle.
00.jpg" alt="Separate the spindle from the platter by loosening with a Philips head screwdriver.">Separate the spindle from the platter by loosening with a Philips head screwdriver.
take the platter & belt back off, then check to see if the motor spins, if it does the belts the wrong size or put on wrong, if it doesn't spin then you better get your butter & jam out, to put on your toast.
Hi, sounds like the belt was not refitted when the motor was replaced. To replace drive belt on a Crosley turntable. 1. Remove the cir-clip holding the platter in place from the base of the centre spindle. 2. Lift the platter off. You may need to use a flat blade or some similar tool to get under the platter in order to lift it up. 3. NA. 4. Place the belt around the platter pulley making sure it is sitting flat without any twists. 5. Flip platter over the right way up 6. You will see 3 rubber grommets in the platter surface. Remove 1. Through the hole insert a belt hook, crochet hook, kebab skewer, knitting needle type tool and slip it between the platter pulley and belt in readiness to fit over the motor pulley.
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
You will have to lift the platter section off the unit itself. Check for the spindle motor turing the table and lay the belt out around the spindle motor. Refit the platter and work the belt around the inside of the platter through the two large holes in the tray.
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.
The belt goes underneath the turntable platter. First you attach to the lip on the bottom of the turntable platter, then you put the platter on the turntable. You'll see some holes on the platter, after you put it on, just rotate the platter, until you see the motor shaft, then pinch the belt around the motor shaft.
The trick is to lift up on the platter (tothat metal on metal feel that you had) while simtaneously "lightly" tapping on the top of the shaft with a hammer. Trust me it will work as just changed my belt.
Hope that helps.