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ARCHIVED FORUM -- April 2007 to March 2012
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This is the first Archived Forum which was active between 17th April 2007 and 1st March February 2012

 

Latest post 09-20-2008 1:04 PM by Dillen. 6 replies.
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  • 09-19-2008 1:19 PM

    • PWH
    • Not Ranked
    • Joined on 06-22-2008
    • Posts 44
    • Bronze Member

    4002 will not advance on the record

    I have now checked this deck out and all functions work, I have cleaned, lubricated the dropping mechanism cylinder and cleaned the running rails which were squeaky. Everything works except, the record gets stuck, (I have tried several) i.e the arms are not moving across the record with the pickup dropped. It will travel to the end and back with no record and arm raised so it is not obstructed.

     How does the deck know how much and when to advance? Surely not pressure on the stylus?? The tonearm is very easily to move up and down but quite tight side to side Where do I look? I have the service manual

     T hanks, Peter

  • 09-19-2008 2:28 PM In reply to

    • Mohawk
    • Top 500 Contributor
    • Joined on 01-30-2008
    • Sweden
    • Posts 103
    • Gold Member

    Re: 4002 will not advance on the record

    Hi

    There is a photo detector diaphragm below the tonearm that tells the deck to advance. Probably your detector will need an adjustment or the detector circuit is faulty.

    /Fredrik 

     

  • 09-19-2008 2:44 PM In reply to

    • Dillen
    • Top 10 Contributor
    • Joined on 02-14-2007
    • Copenhagen / Denmark
    • Posts 5,008
    • Founder

    Re: 4002 will not advance on the record

    Exactly

    - or the lamp has blown.

    Martin

  • 09-20-2008 6:16 AM In reply to

    • PWH
    • Not Ranked
    • Joined on 06-22-2008
    • Posts 44
    • Bronze Member

    Re: 4002 will not advance on the record

    Hi The lamp is blown, the manual is not very helpful describing 'housing with lamp' what is the voltage rating of the lamp? will one from the speed indicators do the  job?
  • 09-20-2008 7:18 AM In reply to

    • Ben
    • Top 500 Contributor
      Male
    • Joined on 12-28-2007
    • Taunton, UK
    • Posts 131
    • Silver Member

    Re: 4002 will not advance on the record

    I swapped the lamp for a 3mm red LED and resistor. Works great, and now no more lamp to fail.

     Cheers,

    Ben

  • 09-20-2008 12:19 PM In reply to

    • PWH
    • Not Ranked
    • Joined on 06-22-2008
    • Posts 44
    • Bronze Member

    Re: 4002 will not advance on the record

    Bulb replaced, diapragm adjusted, its very critical, and it no works perfectly. Thank you all for your help.
  • 09-20-2008 1:04 PM In reply to

    • Dillen
    • Top 10 Contributor
    • Joined on 02-14-2007
    • Copenhagen / Denmark
    • Posts 5,008
    • Founder

    Re: 4002 will not advance on the record

    Good job !

    Martin

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