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Tonearm on turntable wont stay on record

I have a pioneer pl 320 deck. every time tonrarm is put onto record it always returns imediatly to rest position, switches off then arm lifts up then goes down again with turntable continually rotating. turntable will only stop spinning by hand. Any ideas on how to solve this?

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Remove the motor assy and you will see the main nylon large gear, it had 2 metal cams under the one screw on top of it. One is the start cam and it must slide freely on top of the other one cam. Over time the grease binds up under the start cam and it doesnt move back in as the motor moves the nylon cogs around and so it start over gain and again. Degrease and lightly lube the metal cam so it moves freely by using your finger, reassemble and test.

Posted on Oct 30, 2010

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Pioneer Pl990 turntable sounds awful.... I have a pioneer pl 990 record player connected to a pioneer amplifier and a sony CD player. when I play an LP, the sound is bass heavy and I can hardly hear t


When the turntable plays, do you get a howling bass heavy sound? Have you tried turning down the volume and bass? If that corrects the problem, you have what's known as Acoustic Feedback. Check to make sure the tonearm is properly set up first. If it is, please visit my website at Audioserviceclinic.com. You may contact me there. Thank you.

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Some turntables do not return the arm to the rest. However if it did so previous then something could have broken or become out of place underneath the turntable. The only way to check is look under the turntable by removing the base and looking for signs of damage.

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How do you adjust the tone arm on a Denon DP-47F turntable? Thanks Cosmicharlie


Basically, like almost any other turntable.

Look up the recommended tracking force for your cartridge/stylus.

Unplug the power to the turntable.
Using the tonearm elevation control, raise the tonearm.
Manually move the tonearm in toward the platter.
Manually rotate the platter ClockWise a few turns to disengage any cueing mechanisms.
Set the Tracking and Anti-skating controls to 0.
Disengage the tonearm elevation control. The tonearm will either float or drop. This is why we have no power, just in case it hits the platter.
Adjust the counterweight until the tonearm floats exactly horizontal. Use the flat portion of the tonarm rest as a gauge.
Return the tonearm to its rest.
Dial in the prescribed tracking force and anti-skating. Play records.


Register with http://www.vinylengine.com/ and find the manual here...

http://www.vinylengine.com/library/denon/dp-47f.shtml

Basically, like almost any other turntable.

Look up the recommended tracking force for your cartridge/stylus.
Unplug the power to the turntable.
Using the tonearm elevation control, raise the tonearm.
Manually move the tonearm in toward the platter.
Manually rotate the platter ClockWise a few turns to disengage any cueing mechanisms.
Set the Tracking and Anti-skating controls to 0.
Disengage the tonearm elevation control. The tonearm will either float or drop. This is why we have no power, just in case it hits the platter.
Adjust the counterweight until the tonearm floats exactly horizontal. Use the flat portion of the tonarm rest as a gauge.
Return the tonearm to its rest.
Dial in the prescribed tracking force and anti-skating. Play records.

Apr 14, 2011 | Denon DP-47F Turntable

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Converting a turntable from automatic to manual


I suppose the only way to do it would be to stop it functioning completely. The only way would be to dissasemble the auto function. What you would need to do is work out which parts are essential for the turntable operation and which only activate the return. So you need to whatch the mechanism working. You will need to remove the base and look at from underneath, just like going underneath a car!
I can't say for certain if you can do it, only you will be able to determine it can be removed without affecting the operation of the entire turntable.

May 21, 2010 | Pioneer PL-990 Turntable

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Tonearm goes to record and returns to start position without ever playing the record


Do you have an adjustable piece at the end nearest the pivot point [the bit that goes into the turntable] if you do then adjust the weight so there is more downward pressure on the record [ or just try putting weight on the tonearm ] and see if this helps

May 23, 2009 | RCA Audio Players & Recorders

1 Answer

45 and 33 sound slow


Here's a procedure for setting the tonearm...

Look up the recommended tracking force for your cartridge/stylus.

Unplug the power to the turntable and place it on a perfectly level surface.

Set the Tracking Force and AntiSkating to 0.
Using the tonearm elevation control, raise the tonearm.
Manually move the tonearm in toward the platter.
Manually rotate the platter Clockwise a few turns to disengage any cueing mechanisms.
Disengage the tonearm elevation control. The tonearm will either float or drop. This is why we have no power, just in case it hits the platter.
Adjust the counterweight until the tonearm floats exactly horizontal. Use the flat portion of the tonarm rest as a gauge.
Return the tonearm to its rest.
If you don't have a Stylus Tracking Force Gauge. Dial in the prescribed tracking force and a corresponding anti-skate reading. Play records.

May 04, 2009 | Audio Players & Recorders

1 Answer

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Since there are no tonearm adjustments the only solution in the manual that comes close is to make sure the turntable is level. The other possibility is the no-brainer of checking the stylus cover is NOT rotated down, preventing the stylus from contacting the record.

A quick and dirty test of tonearm balance being too light would be to unplug the power and manually move the tonearm over the platter. Gently lower it to see if it floats in the air or lightly but firmly contacts the platter. That won't tell you if it is tracking properly but it might indicate or eliminate tracking force as the culprit.

Apr 26, 2009 | Audio Players & Recorders

1 Answer

Turntable tonearm returns but starts playing record over again.


http://www.vinylengine.com/library/pioneer/pl-570.shtml
on page 8 of the above service manual for your model it shows 4 electrical switches that tell the computer what 'state' the mechanism is in at any given time. Either one or more of the switches are intermittant or the mechanism has dried up grease that is slowing down the operation and basically gumming up the works. the old grease would have to be removed and replaced when it is causing binding. The switch just to the right of where is says "microswitch ksf-023" is an 'open air' type and so would be the most likely suspect. it simply needs to be cleaned with a super fine file designed only for cleaning switch contacts. THIS SERVICE SHOULD ONLY BE PERFORMED BY QUALIFIED PERSONNEL ONLY!!!!!

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Are the record size tabs sticking up through the turntable platter cover? They sense the size of the record being played and adjust the run out distance for either 45 or 33 rpm records.

Jan 04, 2009 | Audio Players & Recorders

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