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Platter speed Platter turns too slow. Is ther a wat to adjust?

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Posted on Jan 02, 2017

rommelalilin
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SOURCE: My SounDesign Player Turntable System

Try to lift the table (it might have a "c" clip lock in the center) and check the belt or idler tire on the bottom of the table.

Posted on Feb 07, 2011

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My Gemini TT 02 gets stuck at 45 RPM. To get back to 33 you have to turn off and on again. Also the pitch is wildly out by about +7. Is there any way I can repair this?


Your terminology confuses.

Point 1. Why to you say, "Stuck?" Does it not make sense as a possiblity that the designers sought to prevent rotaton speed from being changed mid playback, especially on, say, an LP (long play) album with different side (stereo instead of 45 monaural) grooving. What would be the imperative of changing record speed in that manner...only one record type will play at a time. If changer, only one type record seriies can be played, all at the same speed.

Point 2. ...about "pitch...wildly out by about +7.

First, what are you meaning by pitch and by + (not -) 7. Since there is, to my knowlege, no record spin criterion known as pitch, are you referring to spin speed; hence to playback sound frequency, whether steady state or variable? If there is no user control of platter rotation speed on your unitn there would be little you can do other than to ensure all parts above and below platter are running smoothly with no drag or interference...possibly even lightening the record load on the platter, if a changer; and making sure records are clean to prevent slippage by washing with water or soap and water and air drying--avoid label. If your turntable is optically speed controlled (by timing marks on platter rim) those are typically adjustable to hasten or slow platter speed and therefore playback frequency pitch to your liking. "Wild variation" could reflect mechanical impedance as indicated above. Also check for record warping by trying known true record playback. Finallly, wild variation could be indicator of platter motor end of life cycle. Start pricing a motor if nothing helps.

I still don't follow the significance of the speculative(?) 7. Please explain if possible.

Sep 27, 2014 | Audio Players & Recorders

1 Answer

How do I fix the speed of my Technics SL-6 Turntable?


Something has gone awry in the world beneath the platter so you will have to remove the platter to expose the mechanism, then observe what happens (or doesn't happen) when the buttons are pressed.

Jul 29, 2014 | Technics Audio Players & Recorders

1 Answer

Pitch adjustment


There's a variable resistor with the name pitch besides it... first clean it and then you put your pitch fader in the middle and turn it with a screw driver, put your platter on the unit, the plastic black plate you only have to unscrew and take off , nothing else., but like i said , but the platter on it and watch the strobe lights. Determine first which way you have to screw, it's just whole the time :taking of platter and turn screw a bit(don't forget to take of the electricity when you remove the platter), put it on and do that until the strobe stays steady.
greetings richard

Jan 12, 2014 | Technics Audio Players & Recorders

2 Answers

Recently purchased used Panasonic SL-HM42 turntable. Works, but turning a little slow on 33rpm (30-31rpms) says DC Servo System on the front. Don't see any set screws on bottom. would like to get platter...


How to tweak the playback speed on Panasonic SL-HM42 turntables
recently-purchased-used-panasonic-sl-jxgmd5u3zcskalhaccgps5fw-3-20.png

You will need:

  1. 1x small Philips screw driver
  2. 1x small flat-head screw driver
  3. An ear for correct pitch and a little bit of DIY skill!

Step 1 - Remove the wooden base plate

After ensuring that you've removed the the rubber turntable slip mat and securely docked the turntable arm, carefully flip the turntable over onto its lid to expose the wooden base plate, as per below.

Using the small Philips-head screw driver, remove the screws holding the wooden base plate in place, then gently lift the base plate off the turntable.

recently-purchased-used-panasonic-sl-jxgmd5u3zcskalhaccgps5fw-3-26.png

Step 2 - Expose the pitch adjustment screws

Once the wooden base plate is removed, you will see the speed-controller circuit board on the right-hand side.
recently-purchased-used-panasonic-sl-jxgmd5u3zcskalhaccgps5fw-3-50.png

To expose the the two speed/pitch-control screws, firstly remove the screw holding the speed-controller circuit board in place, then gently lift the circuit board up on the free side.
recently-purchased-used-panasonic-sl-jxgmd5u3zcskalhaccgps5fw-3-41.png

Step 3 - Correct the turntable playback speed and pitch

The easiest way I found to correct the playback speed was to flip the turntable carefully back into the original position, allowing the speed-controller circuit board to hang free as shown below.

recently-purchased-used-panasonic-sl-jxgmd5u3zcskalhaccgps5fw-3-60.png

Next, play a record that you know well and are able to tell when the speed/pitch is correct (assuming you have an ear for correct pitch, that is!), then at the same time using the small flat-head screwdriver, gently turn the speed adjustment screw(s) to adjust the playback speed up or down until the correct playback speed and pitch is achieved (or at least until it no longer annoys you ;).

Turning the screws clockwise (to the right) will increase the speed/pitch, and anticlockwise (to the left) will decrease the speed/pitch.

NB - Both screws allow for fine pitch control, so if the second is already at maximum speed, you can use the first screw for additional speed.
Step 4 - Reassemble the turntable again

When you're happy with the speed of your turntable, remove the record, the mat again & locking the turntable arm, replace the screw holding the speed-controller circuit in place (as per Step 2) and then finally replace the screws holding the wooden base plate, as per Step 1.
Happy listening!

Aug 29, 2013 | Audio Players & Recorders

1 Answer

Numark ttx/ttx1 pitch fader wonky


Try spraying the slider with Servisol Video 40.

Mar 15, 2013 | Numark TTX1 Turntable

1 Answer

My turntable slowing up my pitch is off' '


Sounds to me like the belt has snapped or slipped off. Lift the platter off the table. On the inside of the platter you will notice a second ring, or rim. the belt should be put on the outside of the second rim while the platter is still in your hands. Next, slide back the platter and look for the spindle running the platter through one of the big holes in the platter. Slip the belt onto the spindle and turn with your hand to make sure it runs freely. Hope this helpsmicmor100.jpg

Dec 07, 2010 | Technics SL-1200MK2 Turntable

1 Answer

Numark tt1625 turntable wavey sound


Your belt is probably worn and needs replacing. Lift felt on platter and and lift the platter section off the unit by putting your thumb and forefinger through the two large holes and pull upwards.There should not be any special routing for the belt and should go directly onto the spindle motor to your platter. Place the belt around the inside rim of the platter while it is still off the unit. Now replace the platter and move the platter around until you see the spindle motor through one of the holes. Use some tweezers to manouvre the belt onto the spindle motor. On some units you will have to lay the belt out inside the unit, replace the platter and manouvre the belt onto the platter. Hope this helps

May 28, 2009 | Numark BATTLE PAK v.4 Turntable

2 Answers

Cdj800 jog wheel stops working after 45mins


The drive motor on this unit is probably about to die, or the contact pad underneath the platter is damaged. In either case, you'll have to take it to a qualified service technician for diagnosis and repair.

- Optic
Digital Analog Therapy
www.repairny.com
www.1200s.com

Oct 05, 2008 | Pioneer CDJ-800 Turntable

1 Answer

Numark cdx


have you checked the brake and start up settings they are the dials by the start and stop buttons it it is turned too far the platter will start up slow, you just trun to dial till you get the right start up speed you want

Jul 25, 2008 | Nu Mark Numark Cdx Table Top CD Player CD...

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