Question about Technics SL-1210 Turntable

1 Answer

Sound only from one channel

HELP!!!! So I am only gettin sound from one channel on both of my turntables. They are only about 2 years old as i got the for X-mas in 2005. I have checked everything i know to check and have found that the pins inside the tonearm when the needle cartridge connects are rusted, carodded, or something to that extent. Is there an easy fix to this or do I need to get new tonearms for both. I have heard rubbing alcohol and a q-tip but nervous to do anything as to not screw them up more. Please someone help me


Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 102 Answers
Re: Sound only from one channel

Get hold of a multimeter and check the resistance from the leads in the shell (when connected to the tonearm) to the plugs at the other end of the cable. It should be zero or very near to zero.

Measure the resistance of the cartridge itself on both channels to see if it's at fault. Moving magnet cartridges should give somewhere between 500 and 1000 ohms, Moving coil a lot lower.
Use a high resistance setting in the multimeter to start with.

Color codes for headhell wiring:

Red = Right signal
Green = Right ground
White = Left signal
Blue = Left ground

When you measure much higher resistances or open circuits cleaning is indeed needed.

I clean small contacts like these with a fiberglass brush, which I think is/was sold as a sort of eraser in office supply shops, with a bit of alcohol on it.


You won't screw up anything by cleaning up a bit as long as you don't use any agressive cleaning fluids, plain old alchohol and gently scraping of the gunk will do.

Hold the cable ends with the clips firmly between tweezers and scrape around in them. When they do not fit snugly on the cartidge anymore after cleaning just gently squeeze them together a bit before re-installing the cartridge.

Posted on Jan 15, 2008

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Turntable only playing in one speaker

In my business I work on a lot of turntables. Specifically, Memorex, Anders Nicholson, Innovative Technology and Emerson. 99% of the time when I only have sound coming out of one channel it is due to a broken cartridge. If you look at the tone arm head from underneath you will see a rubber fork that the needle arm sits in. There are usually 2 ceramic cartridges attached to the rubber fork. Those transmit the sounds from the needle. If one of those brakes then that channel will not transmit any sound.

Dec 07, 2011 | Technics SL-1210 Turntable

1 Answer

I am only getting one channel when recording from Numark Ion Usb turntable, using Audacity software. The software is configured for stereo, but left track is not recording (and no sound from speaker...

Set your Audacity software to STEREO MIX on the main window. Go into EDIT, Preferences and set the recording device to your sound card and the channels to 2 stereo.

Mar 07, 2011 | ION Audio iTTUSB Turntable

1 Answer

The sound of the ''shure m44-7'' only sends a signal to the left side of my headphones and master. the cables are wired in the good colour and seem to be steady, what else could it be?

If you are only getting sound from one channel try reversing the left and right channel cables from the turntable to the Preamp/Amplifier. If the sound switches channels in your headphones then the cartridge or the cables from the cartridge to the preamp in the turntable have a problem. If the same channel has sound, did not change channels, then you have a problem with the preamp or headphones. If the headphones work with another input, radio, cd, etc, then the headphones are good and the problem is in the preamp unit.

Jun 17, 2010 | Shure M44-7 Turntable

2 Answers

One of my DJ turntables = only left side stereo sound

need to narrow it down, using 1 turn table ONLY with the mixer on channel 1 (the chanel that is working) to test reciever is working properly and sound working on both side of the speakers, this eliminate the first turn table. Next, disconnect the working turn table (1) and connect your second turn table to the same chanel and see if you getting the sound coming chanel 1 just as your first turn table did. If you getting sound coming out from turn table on ch1 than is not the turn table issue. It will be you mixer having problems. You cant solve the problems having everything connected. Testing one turn table at a time using working chanel on the mixer to see if both turn table working properly. If you use the same chanel testing both turn table and the second one does not work than it will be one of your turn table is faulty. Note: if you find and test both of your turn table is working properly than it will be your mixer. good luck and hope that help..

Aug 06, 2009 | Technics SL-1200MK2 Turntable

2 Answers

No sound from one channel

hi!change your rca connector..first..ok 

Jun 07, 2009 | Technics SL-1200MK2 Turntable

1 Answer

I was wondering what the extra wire attcahed to the audio cords it looks like a speaker wire

the bare stripped wire is for grounding the turntable to the receiver to eliminate any hum sound. If after connecting both phono plugs, you only get sound from one channel on the turntable but sound plays out of both channels on all other inputs then replace the phono plugs as this is the most likely problem.

May 27, 2009 | Turntables

1 Answer

Sony PS-LX300USB Turntable, one channel not working

Have you tried swopping over the output leads from the turntable to the amp (normally one red and one white phono plug) so they are in each others socket? If you do this and you still get no sound from the right channel it is almost certain to be a faulty amp,or speaker.
If you swop and get no sound from the LEFT channel it is could be either a faulty lead or cartridge.

Apr 19, 2009 | Sony PS-LX250H Turntable

1 Answer

Problem with connectors, no left channel

Your RCA leads/cables might be bad and need to be replaced.

Turntable Technician

Aug 23, 2008 | NAD 533 Turntable

1 Answer

Gemini tt02 no sound!

phono \line switch the right way maybe.have you got signal on the mixer from dodgy deck

Aug 20, 2008 | Philips gemini TT-02 Turntable

Not finding what you are looking for?
Technics SL-1210 Turntable Logo

134 people viewed this question

Ask a Question

Usually answered in minutes!

Top Technics Turntables Experts


Level 3 Expert

4518 Answers

T-Comtech Repairs
T-Comtech Repairs

Level 2 Expert

411 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

5327 Answers

Are you a Technics Turntable Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides