[ddots-l] Re: laptop power problems

You may need to get rid of the third pin.
Gord
  ----- Original Message ----- 
  From: Mark Brierley 
  To: ddots-l@xxxxxxxxxxxxx 
  Sent: Monday, January 25, 2010 11:54 AM
  Subject: [ddots-l] laptop power problems


  Hi list,

   

  Just a quick question which might be very difficult to answer!

   

  I've bought a new laptop for my pro audio setup.  The laptop is custom built 
by Music PC in the UK.  I plugged it all in with my gear over the weekend, and 
get a horrendous high pitched noise over my speakers and mixer.  It is quite 
clearly the power supply, as when the laptop is running on batteries, there is 
no noise at all.  I have had this problem a couple of times when out doing live 
shows, but never really found the solution.

   

  Am I right in saying that it isn't a ground loop?  It is my understanding 
that ground loops are at a far lower pitch.  If anyone has got any ideas on how 
to get rid of this horrible noise, I would be very grateful.

   

  Many thanks

   

  Mark

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