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Speed i have a piooner quartz pll 630 turntable the platter runs at a very high speed the pitch meter goes full what is the problem

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The drive circuits on this unit are probably failing. Have you had any service done to it recently, or at all, ever? If so, this might be the problem. The caps have probably dried out. Once they dry out, they go pretty fast afterwards causing variance in speed. A good tech should be able to replace the caps, and get your unit back to original specs.

- Davis
DJ Pro Audio
www.DJPROLAB.com
www.DJPROAUDIO.com

Posted on Aug 08, 2008

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Once the needle touches 33 lp it speeds buy the songs


Yes the platter speeds up until the moment comes. 0'5 sec later and then the electronics take over , want you to try quartz activated and after that quartz put out and then you have a pll. try moving the pitch a bit, cause the 1210mk2 aint tables which you want for the good maintainence. if it helps or doesn't , mail as fast as you can

Mar 18, 2014 | Technics Turntables

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 | Turntables

1 Answer

Numark ttx/ttx1 pitch fader wonky


Try spraying the slider with Servisol Video 40.

Mar 15, 2013 | Numark TTX1 Turntable

1 Answer

There are 2 problems with the my deck: 1. The +-0 light for the pitch will not work but everything else about the pitch works fine. 2. The deck will not change from 33bpm to 45bpm, I have replaced the...


Hi, please do this test for me. With the deck running on 33 speed and the pitch control set to 0 use your finger on the platter centre and speed it up manually as much as you can. Doe's the quartz lock lamp come on? If not then open the deck up and loosen off the fixing screws on the circuit board that has the 33/45 buttons. Try to change speed with the board loosened off. If none of the above makes any difference replace the quartz lock neon. Use only original Technics neon. As a matter of interest have you done any mods to the deck? Cheers John,

Sep 29, 2011 | Technics SL-1210 Turntable

1 Answer

I own a SL1200 MKII and when the light "turn on" in the pitch control slider (green LED) the speed is not correct (big dots on platter move slightly) .Could you please give me some tips to solve...


Use the slide on the pitch control to move forward or backward until the dots stay steady. If it is a little old the quartz control won't work as well.

May 13, 2011 | Technics SL-1200 Turntable

1 Answer

Why Fry - 220 or 110 ????


You should be fine with this. Here is the spec:

Quartz lock large blue LCD display showing: speed, pitch & platter direction, locking platter reverse button, located in battle position, 3-speed design: 33, 45 & 78 RPM, 7 grams of anti-skate adjustment, adjustable pitch control+= 10 & pitch bend buttons, locking reverse button, hi-tech tone arm with height adjustment, feather-touch start/ stop control, strobe illuminator, pop-up target light, headshell, slipmat and dustcover included . 115V/230V switchable. 17.75"w x 6"h x 14"d. Weight:27lbs.

Jul 18, 2010 | Gemini PT-2410 Turntable

2 Answers

My stanton t50 turntable plays too fast even when the pitch fader is at the slowest speed


You need to calibrate your pitch control. This requires a small precision screwdriver (similar to something you would repair eye glasses with). If you look under the turntable where the pitch control is you will find 2 small holes, 1 marked 33 and 1 marked 45. Turn the turntable on and set the pitch control lever to zero pitch. While the turntable is spinning insert the screw driver into the pitch calibration hole under the turntable and twist the potentiometer back and forth until the turntable pitch is zero (I believe clockwise is faster, counterclockwise is slower as you look up from the bottom of the turntable). This is a fine tune adjustment and will not require much turning to adjust the speed (1 or 2 mm's) either way should start to bring you into zero pitch. The platter speed can be verified by the little dots on the rim of the platter. They should appear stationary in strobe light on the power switch when you are at zero pitch. When you are adjusting the speed you will observe the dots on the platter rim spinning clockwise and then counterclockwise as you adjust the fine tuning. Fine tune the speed until the dots appear stationary and you will be back to zero pitch. You have to adjust the turntable at both speeds 33 and 45 using the correct fine tuning hole under the turntable. My personal experience is it is easiest to do this with 2 people. 1 person to hold the turntable level and running, while the other adjusts the fine tuning. Hope this helps.

Oct 22, 2009 | Stanton T.50 Turntable

1 Answer

My pioneer PL990 turntable, the pitch wavers.


try cleaning the inner ring on the underside of the actual turntable platter and also the motor spindle using isoprynol alcohol or use neat clear spirits like bacardi/vodka with cotton wool etc. if black residue comes off either the platter or the motor spindle that will be residue from the old belt that could cause the fluctuation in speed? good luck.

Jul 10, 2009 | Pioneer PL-990 Turntable

1 Answer

Pitch and Strobes


There is nothing wrong with your turntables. The Strobe dots are only a guide to give you an idea of the speed your platter is rotating. Nothing more, nothing less. The pitch control decal is not 100% accurate, it is simply a guide to tell you where the 6% position lies, 3.3%, etc.

As long as the quartz lock function works, and the large middle strobes are nice and solid, and do not move, your fine.

You can check out these videos for more insight into these wonderful turntables:

http://www.DJPROLAB.com


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

Sep 19, 2008 | Technics SL-1200MK5 Turntable

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