Dual 1210 issue

Discussion in 'Turntables' started by Bill44, Nov 10, 2018.

  1. Bill44

    Bill44 New Member

    Messages:
    7
    Hi AK,

    My Noresco NC-341 (Dual 1210 on top) just started burning and I cannot see what burnt, is this a common problem and if so, how can I fix it?
    Thank you,
    Bill
     

     

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  2. NoTransistors

    NoTransistors Dual Turntables Super-Restorer

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    Noresco must have been the Canadian subsidiary of Lucas.

    [Only a select few will understand this reference.]
     
  3. NoTransistors

    NoTransistors Dual Turntables Super-Restorer

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    Interessing.
     
  4. olddude55

    olddude55 AK Subscriber Subscriber

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    Joe Lucas, the prince of darkness. Although nearly ever AMT model kit I built back in the 1960s had Lucas lamps as a "custom" option.
     
  5. stereofisher

    stereofisher For the Love of the Music Subscriber

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    Without looking underneath...switch? Not normal.
     
  6. Bill44

    Bill44 New Member

    Messages:
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    I figured it was not a common problem, I think I may have found something wrong, but I am not sure, here is a picture of it.

    Also, anyone know a good and effective way of getting rid of the smell? I've had my window open for several hours and the smell is still here.

    https://drive.google.com/open?id=0BwszvhktYO0Ydktfa1NoWEdTOEhiOHdMUUNBMGI3ZWFOOWtR[​IMG]

    Here's the link, sorry about not realizing that it didn't work earlier.
     
    Last edited: Nov 11, 2018

     

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  7. Patrice B

    Patrice B AK Subscriber Subscriber

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    Contact Klaus (DualCan) on VinylEngine. He's a former assistant manager at Noresco.

    BTW, your pic doesn't show...
     
    Last edited: Nov 11, 2018
  8. tnsilver

    tnsilver Super Member

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    I can see it - but I'm not really oriented. It's too zoomed in. I need a better perspective.
     
  9. Bill44

    Bill44 New Member

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    7
    Will do, give my a minute
     
  10. Bill44

    Bill44 New Member

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    7
  11. tnsilver

    tnsilver Super Member

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    OK look, as far as I can tell, this is not a turntable issue but rather a driver amp PCB / power supply malfunction:

    Basically, this PCB with ancient components and rotten power lines:

    [​IMG]

    Fried resistors and medieval electrolytic capacitors:

    [​IMG]

    ...and cooked (bias?) transistors, and suspiciously scorched sections:

    [​IMG]

    Honestly, the entire PCB could use a rebuild, the ouput transistors need checking (prolly some are toast) and the power lines verified and replaced.
    It sounds like a major PITA and unless you have the skill to do it on your own, I'm not convinced it's financially viable or even worth it. Good news is,
    most likely, the nice turntable is probably intact and can be removed to it's own plinth and connected to it's own power supply. Many here would be
    able to assist if you separate the turntable from the amp carcass and re-designate the thread toward a stand alone TT.
     

     

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  12. Bill44

    Bill44 New Member

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    I looked back at the areas that you have marked and determined that I am bad at taking these types of photos, I say this because the circle in the first picture is just a marking on the wire, as with the second photo, the top square is just a shadow which is the same for the circle in the third photo, the square marker is a reflection. Knowing this, is it still worth it to repair? (Also, I thought that the blue capacitor in photo #2 looked broken or busted or something). Thank you very much for analyzing these photos for me.

     
  13. Patrice B

    Patrice B AK Subscriber Subscriber

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    Like tnsilver said, major PITA to restore and not worth the effort in my opinion. Just remove the TT and use it with another amp/receiver...
     
  14. Bill44

    Bill44 New Member

    Messages:
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    Given that the whole stereo part is an expensive repair job, I think I’ll either sell it on Kijiji, or run the turntable through my stereo, how hard would it be to separate the TT from the stereo?

     
  15. Patrice B

    Patrice B AK Subscriber Subscriber

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    Pics of the underneath, the top and complete view or contact Klaus as he probably have the manual... Probably a couple of screws like on the usual Dual changers.
     
  16. Nat

    Nat AK Subscriber Subscriber

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    12,915
    It's easy to remove. Loosen the two transit screws, tilt them inward, and lift up. You'll have to unplug the power cord, RCAs, and ground wire to get it out completely.
    You might want to save the cutout board the table rested on (or alternately, remove the amp electronics and use the case) since you'll need it, or a replacement, to mount the table in anything else.
     

     

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  17. jlovda

    jlovda Things I loved from the 60's and 70's Subscriber

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    As in Austin-Healey, MG, Triumph and Jaguar electrical parts
     
    Last edited: Nov 13, 2018
  18. NoTransistors

    NoTransistors Dual Turntables Super-Restorer

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    I owned two TR-7. As crappy as they were, the handling was superb.
     
  19. 62vauxhall

    62vauxhall AK Subscriber Subscriber

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    Their light switches had two position - Off & Flicker.
     
  20. NoTransistors

    NoTransistors Dual Turntables Super-Restorer

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    Jokes aside for the moment, I loved my little TR-7. Was a stunning little car with 5 MPH bumpers and 5 MPH frame rails and the best Jaguar/Rover 5 speed gearbox I have ever had the pleasure of rowing. The Tremec 6 speed box on my GTO is crap in comparison. But at least I have an LS-1 under the bonnet.
     

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