Restoring a Perpetuum Ebner 2001 VH

Discussion in 'The Projects Forum' started by FranciscoB, Feb 10, 2014.

  1. FranciscoB

    Thread Starter New Member

    Feb 8, 2014
    14
    1
    I'm fixing a Perpetuum Ebner 2001 VH and I'd like to ask for your help. http://i.imgur.com/dDOc2iB.jpg http://i.imgur.com/WGSu5iz.jpg The following metal square was sitting inside the turntable secured to the plastic bottom and connect to the metal chassis by a wire. It feels like aluminum kitchen foil with a paper backing. Is it some sort of discharge plate? Since it's a bit damaged, what can I use as a replacement? Maybe a flattened section of Coke-Cola can? http://i.imgur.com/rg0FoDK.jpg http://i.imgur.com/NhRvfwP.jpg http://i.imgur.com/gptiEOx.jpg http://i.imgur.com/spSPduC.jpg http://i.imgur.com/hiWxdZY.jpg http://i.imgur.com/LYsTxhZ.jpg http://i.imgur.com/qQUKj6y.jpg http://i.imgur.com/ZCSxxS6.jpg http://i.imgur.com/aGMqkgT.jpg http://i.imgur.com/bEnZa17.jpg http://i.imgur.com/fNEhuaM.jpg http://i.imgur.com/GnM2za6.jpg http://i.imgur.com/qrlCxCG.jpg http://i.imgur.com/7K2d08n.jpg http://i.imgur.com/HkVQsC4.jpg http://i.imgur.com/pH9xWiB.jpg http://i.imgur.com/XPsJq1X.jpg Thank you, Francisco
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,446
    3,362
    The metal foil is simply to reduce electrical interference from AC mains.
    You can use cookie baking sheet or something that is sturdier that regular aluminum foil.
    Some auto supply or hardware stores carry aluminum foil on an adhesive backing.
     
  3. FranciscoB

    Thread Starter New Member

    Feb 8, 2014
    14
    1
    Thank you for your help. Could you please explain or point me towards an explanation on how it works?
     
  4. t06afre

    AAC Fanatic!

    May 11, 2009
    5,939
    1,222
    Perhasp it is more easy to work with a copper sheet?
     
  5. burger2227

    Member

    Feb 3, 2014
    190
    24
    I give up, which picture has the picture of the part? I got lost inside a turntable somewhere...

    Shielding keeps signals from getting in or getting out of electronic circuits as interference.
     
  6. #12

    Expert

    Nov 30, 2010
    16,298
    6,811
    Radiated electric and magnetic fields (like radio stations) do not travel easily through a sheet of metal and then jump into the air on the other side of the metal wall. Placing a thin metal wall around delicate signals will help keep away interference.
     
  7. FranciscoB

    Thread Starter New Member

    Feb 8, 2014
    14
    1
Loading...