Question about Technics SL-1210 Turntable

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Platter or motor or what?

I have had my technics 1210s for 8 years now with no problems but this year one has gone funny
the records sound as if they are wobbling and the deck will start up again from pressing the stop button and the strobe is not stable ( the largest circles are meant to be static when at zero pitch green light on but my turntable they looks as if the platter is wobbling but i have changed the platters over and both are fine
has my motor had it or can it be healed?

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Been seeing a lot of problems like this on the newer decks. if the lights instead of moving smoothly are moving a bit, then stopping a little, then moving a bit more. or just wobbling a little bit usually has something to do with the motors... I have also just had to have mine replaced to was having the same problem.... expensive

Posted on Nov 12, 2009

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  • 518 Answers

It could be the motor bad. There's also a voltage regular, possibly an LM317 that could cause this. Also I've seen the lube grease on the platter turn to tar after time and cause problems.

Geno

Posted on Feb 17, 2008

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Couple of options , but first cleanen the pithfader and variable resistor pitch vr3 i thought, it's an open one , he needs allways to be replaced, even technics says so and first clean the board, inside and on youtube and this side there enough movies and text how to do it, and check the pitchfader cables very good.

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Open the turntable. It sounds like the on/off switch is bad. Remove the platter and screws with a phillips screw driver and just make sure the connections are in place. make sure you disconnect the power first.

Jun 12, 2008 | Technics SL-1210 Turntable

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After 14 years my Technics SL-BD22 Turntable has a disfunction The electric motor turns slow.


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They are easy to change, first just lift rubber mat on platter and you should be able to see the belt through a access hole in the platter.

Feb 28, 2011 | Technics SL-BD22 Turntable

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Just bought a new technics sl-1200 turntable and the pitch speeds up and down causing music to sound funny....


You will need to check your belt for wear. Lift felt on platter and check belt tension. It may need replacing. To replace, simply lift platter section of the unit, taking note of the belt position. replace and your problem will be solved

Dec 03, 2009 | Technics SL-1200 Turntable

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1 Answer

Techics sl-1210s m3 turntable spins back on itself


You have a fault on the quartz-lock speed control electronics. It may be a simple fix, it may be not.

It will require specialist investigation. A Technics dealer should be able to advise you, and arrange shipping back to Technics for repair if you decide that is the best thing to do.

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You have a short somewhere on your main PC board that is causing this. You will have to take it to a qualified service professional for testing.

There is no 'motor' per say on this model. It is direct drive, so there is no moving parts. A drive coil rotates the magnet that is located under the metal platter. This in turns causes the platter to rotate. You can stop the platter, and nothing will happen to the drive system. It's basically just not going to turn. There is no resistance occurring, which is the beauty of these turntables, and which is why DJ's prefer them to other models on the market - especially the Turntablist community.

More than likely there is something on the main PC board that is causing a short, blowing out the fuse. Look at R213 - see if there is a discoloration around it, also take a look at Q2 and Q3.

If you have no idea what I am talking about, then don't try to figure it out. Take it to a service center.

- OPTiC
The 1200s Expert
www.REPAIRNYC.com


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3 Answers

Sudden pitch change.


There is a speed control IC inside this unit that could be defective or the speed detect sensors could be faulty. WIthout seeing the actual machine it is hard to tell. This one is a direct drive if memory serves me correctly, so you should not have this kind of drift. With the unit only a year old, I would not expect a motor problem either. Can you tell if the drift is toward higher speed or lower? Or does it vary?

Dan

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Howdy Ivy:

An Adobe PDF format service manual for the Technics SL-23 turntable can be downloaded from

http://www.servicemanuals.net/

for about $16.

Good luck!
Paul H.

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1 Answer

More platter problems


There is no simple solution for this type of repair. One of the drive circuits has gone bad on your unit. This is a common problem, unfortunately, not a simple one. The hard part is finding out which circuit has gone bad. There are a total of 8 various components on the main board which control the drive sequence on the 1200s. Anyone of these, or a combination of a few, could have gone bad.

If you have access to a multimeter and know how to use it, you should be able to tech the issue rather quickly, and I would suggest obtaining the service manual for the exact specs of each circuit. If not, you will need to take it to a qualified service center for diagnosis.

If someone tells you it's your pitch control, it's not. The pitch control will not cause this type of problem. It's either one of the IC's, the resistors, or diodes.

- TWEAK AV LAB
The ORIGINAL TURNTABLE Technicians.

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