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Re: [emax] Re: Most front panel buttons don't work - Emax 1 Rack HD

2011-11-05 by jack

ill check on sunday as im doing some burn in tests for a vfd so i can check the signals with a logic anyliser and check the voltages for the diodes could have a cold joint some where 

il;l let you know tomorrow what i find
  ----- Original Message ----- 
  From: mcnik_k 
  To: emax@yahoogroups.com 
  Sent: Saturday, November 05, 2011 4:28 PM
  Subject: [emax] Re: Most front panel buttons don't work - Emax 1 Rack HD


    
  Yes, continuity checked for all voltage supply lines to switches.

  Fault is definitely pre-diode on the main digital board. All 4 diodes should have +5 at their chip-facing side, three of them have near zero, only one has +5, that is the one that supplies the aforementioned working switches.

  Thanks!

  --- In emax@yahoogroups.com, el macaco <elmacaco@...> wrote:
  >
  > Did you check continuity on the traces carrying the power to the switches etc?
  >



  

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