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.

- OPTiC
The 1200s Expert
www.1200s.com

Posted on Sep 08, 2008

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DO THE SIMPLE THINGS FOR STARTERS. DID YOU TRY REVERSING THE CHANNELS? CONNECT THE LEFT TO THE RIGHT AND THE RIGHT TO THE LEFT. THAT WILL TELL YOU IF IT'S THE TURNTABLE OR THE AMP. DO YOU PERHAPS HAVE ANOTHER STYLUS YOU CAN TRY, TO SEE IF THE NEEDLE IS DAMAGED?

TIM

Posted on Jun 23, 2008

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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 - www.panasonic.co.uk - go to the Support Section for a list of auth service centers in your area.

- TWEAK AV LAB
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