Emax

the inverter only changes the voltage for the contrast of the lcd remember from + to negative which was how the old lcd worked

the efoil converter is a power switching transistor and a step up transformer so that it can take a 5v signal and change it into a 5v ac signal which is then aplified by the step up transformer for the correct required voltage for thwe efoil to produce light 

this is on the main board its a green square this is the item that produces a whine when you loose the backlight they also can get dammaged from a backlight fading for to long the produce a high pitched humb
  ----- Original Message ----- 
  From: Louis van Dompselaar 
  To: emax@yahoogroups.com 
  Sent: Wednesday, November 17, 2010 6:59 PM
  Subject: Re: [emax] Emax II backlight inverter


    
  It *is* the inverter that is causing the noise.
  That's why I'm looking to replace it...

  Op 17 nov 2010, om 19:51 heeft Ted Summers het volgende geschreven:

  > are you sure it is the backlight and not the Inverter block on the main
  > logic going bad?
  > That is a part easy to replace that can also cause noise as it vibrates due
  > to the transformer....
  > 
  > just a thought
  > 
  > Ted



  


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