Question about Technics SL-1200MK2 Turntable

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Technic 12000 I am getting no sound out of the left hand side of my technic1200 mk 11 deck. I have changed the leads and this made no difference.Any suggestions to the fault?

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  • grahamcon Jun 24, 2008

    Tim ,

    Tks for your imput I have tried all the usual including reversing the leads and every possible solution. I have had 1200 for the past 20 years and come across all these problems before.There is something in the deck that is blown. If i can find out what it possible is I can change the part. Any suggestions Tks

  • cutty941 Jul 27, 2008

    no sound... everything else works fine...


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The issue is more than likely with your tonearm. How did you replace the leads? Did you unsolder the old ones from the main PC board? Or did you just splice? If you just spliced new ones, this also might be the root of your issue. If you went straight from the board, then the only other culprit is your tonearm.

Well, actually, the issue could also be your stylus or cartridge. Have you determined whether this was ok? If so, then it's your tonearm.

Look inside the area where the cartridge mounts. You'll see 4 gold prongs. All 4 prongs must be protruding, and must all be equally protruding from the base. If one is shorter than the others, that is an issue. You can attempt to get the shorter one to bounce back (there are springs behind each prong), by getting a paper clip or similar and pushing the prong in, hopefully it will bounce back - if not, you'll have to have your tonearm replaced.

If your prongs all look good, make sure there is no build up of any type on the prongs. They should be a nice shiny gold. However, because your unit is 20 years old, I can only imagine it hasn't been cleaned there in that amount of time - most people don't know they should clean that area.

To Clean - get yourself some Isopropyl Alcohol (99% pure ONLY), and get a cotton swab, and just clean it out. If it doesn't work, then it might be damaged, and will need to be replaced.

Besides... After 20 years, it's a good idea to change your tonearm at this time. For the cost, this unit will perform another 20 years without any issues.

The 1200s Expert

Posted on Sep 08, 2008

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Posted on Jun 23, 2008

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To find out what the problem is try this, swap over the right and left leads from the deck to the amp. If the problem stays on the left channel there's something wrong with pre-amp in your amp. If it goes to the other channel (right dead) it's the deck. Next remove the wires to the cartridge to the deck with the fault. Make a note of how they fit on the cartridge before you do. With the amp connected to the deck and on. Touch (one at a time) each of the four wires with your finger. Two of them will probably produce no sound. But from one wire you should hear a buzz on the left channel and from another wire a buzz on the Right channel. If you get a Buzz on the left speaker then all the connects are good and the cartridge has gone. If you don't get a buzz, then there is something wrong with the left cable connector between the deck and amp.

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First check the amp that it's connected to. Since the record deck needs a Magnetic cartridge pre-amp inside your amp, they can go wrong and not effect other devices connected to it. You can do this by just touching the left audio input with you finger, it should buzz.
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If the cartridge is good and your wiring is good. Then it's either got to be a fault on your amp, or there is a pre-amp in the deck itself faulty. Double check that the amp is working, amps have a pre-amp for record decks, they cause trouble a lot.
If you touch the wires that connect to the cartridge, you should get a buzz on either channel (remove them from the cartridge first). If you don't get a decent buzz, and you know that the amp is working fine, then there's something inside the deck causing the problem. In which case take the bottom off and take a look inside.

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First reverse the deck plugs to your amp to make certain it's not something to do with that.
Disconect the left and right wires from the cartridge. With your finger & thumb grab hold of each channel wire. It should hum/buzz. If there is no difference then the cartridge is faulty. If there is a difference, I would have a look inside the turntable (access via the bottom) you might find a pre-amp or something wrong in it.
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I have two technics turntables that aren't outputting any sound.. What are some possible problemns and how much would it be to fix???

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How do i fix my turntable when the output is working on the right hand side but not the left

First - Has the cartridge failed, or has a wire become lose to it? Have you checked the cable comming from deck?
If you have or none of these gives solves the problem, then try reversing the leads on the cartridge so the good ouput gets the missing channel. If you still can't hear it then there's a electronic fault on the left hand channel pre-amp inside the record deck.

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it seems like u need ur audio leads and earth re-doin mate take it to a decent dj shop will cost u about 20 pound 4 both of them to be sorted

Sep 20, 2008 | Technics SL-1210 Turntable

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Single sided sound from my RCA/Phono leads

If you are certain the new leads/RCA cables and the soldering work was done properly, and you've determined that the issue is from the turntable and not your mixer.

Then there are 2 other factors that could be causing this issue:

1) Bad Tonearm - look inside the tonearm, where the cartridge/headshell mounts. You'll see 4 prongs. Make sure those prongs are protruding and they all look even. They must also be a nice shiny brass color. If they are dull and/or black, try cleaning them out with an contact cleaner (CAIG Lab DE-OXIT works good) made for electronic components. If any of the prongs appear to be pressed in, try to see if you can get it to bounce back. Those prongs are spring loaded, and sometimes the springs get misaligned. Of course, they also tend to dislodge. If that's the case, then you will need to replace the tonearm altogether.

2) Faulty Cartridge / Headshell - Make sure your cartridge & headshell work properly. The easiest way to do this, is to swap your cartridge with a working one. If you have 2 turntables, just swap them out, and see if that changes anything.

I am going to say, it's more than likely a tonearm issue. There really isn't anything else, other than the Tonearm and RCA's which would cause sound issues. The Circuit board will not affect your sound, unless you burned it, or damaged it in some other fashion when replacing the RCA cables.

As for a Service Center in the UK, not sure of any, but you can contact Panasonic, which is the parent company of Technics - - go to the Support Section for a list of auth service centers in your area.


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