Emax

right the dac runs on its own power regulators check these 7805 and 7905 +5volts from the 7805

-5volts from the 7905 check you are getting the correct voltage if not the dac wont work check the bypass caps on these power regs 
  ----- Original Message ----- 
  From: philippe.69 
  To: emax@yahoogroups.com 
  Sent: Saturday, September 03, 2011 11:21 PM
  Subject: RE: [emax] Emax II Rack My motherboard Does not work someone has a sale


    
  I think a IC5 --> HCF4051

  -----Message d'origine-----
  De : emax@yahoogroups.com [mailto:emax@yahoogroups.com] De la part de
  jammie.emma@blueyonder.co.uk
  Envoyé : samedi 3 septembre 2011 23:35
  À : emax@yahoogroups.com
  Objet : Re: [emax] Emax II Rack My motherboard Does not work someone has a
  sale

  it sound like the cvdac is at fualt its been a common fualt on the emax1

  so that any control data being pan volume filter cutoff resonance dont have
  any effect

  the cv dac send 0-5v control voltages to the 4051 multiplexer sample and
  holds 
  theres 1 for volume 
  1 for filter cuttoff
  1for resonanvce 
  1 for the panning
  1 for vca

  if the cvdac goes then you wont get any voltage to these sample and holds so
  that when you apply the volume slider there wont be any voltage to the input
  so none will be applied to the outputs
  ----- Original Message ----- 
  From: philippe.69 
  To: emax@yahoogroups.com 
  Sent: Saturday, September 03, 2011 7:49 PM
  Subject: RE: [emax] Emax II Rack My motherboard Does not work someone has
  a sale

  the volume does not vary more maximum input sample does not work the gain
  levels and maximum
  if anyone has an idea that chip does not work IC5 ?? or IC ??

  -----Message d'origine-----
  De : emax@yahoogroups.com [mailto:emax@yahoogroups.com] De la part de Ted
  Summers
  Envoyé : samedi 3 septembre 2011 23:11
  À : emax@yahoogroups.com
  Objet : Re: [emax] Emax II Rack My motherboard Does not work someone has a
  sale

  What is wrong with yours? did you contact Jammie and see if he can fix it/
  what cost it would be?

  On Sat, Sep 3, 2011 at 11:22 AM, Vavasseur Philippe
  <philippe.69@...>wrote:

  > **
  >
  >
  > I need this motherboard Quickly I wait selling proposition
  >
  > 
  >

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  Emax and Emax II User's Group Website

  http://www.silveriafamily.comYahoo! Groups Links

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