On The Operation Table! Park 75 From 1971

Discussion in 'Let's Talk Vintage' started by pleximaster, Jun 17, 2018.

  1. pleximaster

    pleximaster Well-Known Member

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    My injured hand is improving, (cut the two tenons of the middle fingers right of) one of them has heeled good but the middle one got stuck in the wound and won´t lift. i need a few months of exercise and rehab on this one.

    Still I am now planning on trying to do some "amping" fixing this Park 75 that has had a wrong MT and some short wires on the OT. See if I can do lacing on this one with one hand. :)

    2.JPG 1.JPG 4.JPG 3.JPG

    plexi
     
  2. Trapland

    Trapland Well-Known Member

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    Ouch! I hope rehab helps. You need that middle finger to drive in most American cities. ;)
     
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  3. chard

    chard Active Member

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    Great amp.
     
  4. TAZIN

    TAZIN Active Member

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    You don't see those Marcon 40+40 filter caps used in the preamp filter position very often...specially one located on the turret board.
     
  5. pleximaster

    pleximaster Well-Known Member

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    I have had another Park 75 of same vintage with the same grey Macon cap! I´ll see if I can find a pic of it.

    plexi
     
  6. TAZIN

    TAZIN Active Member

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    I checked amparchives site and they had one also with the Marcon cap. I guess Marshall used them around this time frame on some Park amps.
     
  7. pleximaster

    pleximaster Well-Known Member

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    Cool i saw that one now as well. Could´t find pics of my old Park on my current computer, but Park used these Marcon caps. The one in mine is a dual 50uF and the solder joints are original.

    I mounted the transformers today, no soldering yet just screwing them in place with the injured hand was interesting... :)

    It will take some time!

    plexi
     
  8. pleximaster

    pleximaster Well-Known Member

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    Finally!

    IMG_0546.JPG IMG_0547.JPG IMG_0548.JPG IMG_0544.JPG
     
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  9. pleximaster

    pleximaster Well-Known Member

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    Replaced the recifier diodes with a board from an older Park, an replaced the MT with an old one, installed a Bulgin socket and tidied up the wires. I have missed placed the original dish snubber cap but it will turned up soon. Installed new KT88 and biased it (but not at 22mv as in picture :) (that was before)

    plexi
     
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  10. tomsvintage

    tomsvintage Well-Known Member

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    Plexi~ Great work as usual ! Looking forward to some of your grinding heavy sounds clips ;)
     
    Last edited: Aug 19, 2018
  11. Nik Henville

    Nik Henville Well-Known Member

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    The
    spirit of
    Django comes
    to amplifier repair... excellent stuff :applause: - or possibly :metal:
    .
    .
    .
     
  12. pleximaster

    pleximaster Well-Known Member

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    Neil! Encourage by you I done lacing on this one!!! Took for ever though!!!
     
  13. neikeel

    neikeel Well-Known Member

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    That is very good. Even better bearing in mind your finger.
    Consider it essential physio and occupational therapy (better than wicker basket weaving!)
     
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  14. ampmadscientist

    ampmadscientist Well-Known Member

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    Start the reactor... Free Mars!
    I really like your knobs.
    Could we please get a closer look at those beautiful round actuators?

    KNOBS.png
     

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