Video Asylum

• Re: Panasonic High Pitched Noise - Bixby 12:20:23 02/13/03 (0)
  In Reply to: Panasonic High Pitched Noise posted by HokieBird on February 11, 2003 at 18:14:59:

  I have a 32 flat tube Prism (Panasonic's high end effort) circa 1992, and it always had a slight high pitched wine. If I had to guess somewhere around 10k or more in frequency. I did nothing about it. I think if I were in your shoes I would return it if other TVs that you demo in a quiet environment are significantly quieter.

  I say return it because years later my TV developed a very loud 70 -80 DB high pitched whine when certain high contrast scenes came on. To this day it happens, but the picture setting up high makes it worse.

  I recently bought the Avia DVD to more accurately set up the color and picutre on my Hitachi bigscreen. Low and behold the contrast or picture setting went from about 88 to 18. Big change in smoothness of the lines in high contrast areas (like football field)and supposedly preserves the life of the tv.

  Try adjusting the picture to a lower level and the brightness to a desireable level and see what happens.

  Good luck.
  
  

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• Picture too bright? #1 cause of high pitched noise! - EdM 06:01:18 02/12/03 (3)
  In Reply to: Panasonic High Pitched Noise posted by HokieBird on February 11, 2003 at 18:14:59:

  Try turning the brightness down and contrast up or down to suit. Noise is usually from fly back transformer and happens on every tv sometimes.
  
  

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  • Re: Picture too bright? #1 cause of high pitched noise! - Hokiebird 17:42:46 02/12/03 (2)
    In Reply to: Picture too bright? #1 cause of high pitched noise! posted by EdM on February 12, 2003 at 06:01:18:

    Thank you very much for your advice. I tried toning down the picture and that didn't work, and this TV doesn't have "contrast" setting.
    Thanks anyway.
    
    
    

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    • Re: what TV doesn't have a contrast setting? -NT - Aroc 16:23:10 02/13/03 (0)
      In Reply to: Re: Picture too bright? #1 cause of high pitched noise! posted by Hokiebird on February 12, 2003 at 17:42:46:

      NT
      
      

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    • Re: Picture too bright? #1 cause of high pitched noise! - Sam M 09:05:56 02/13/03 (0)
      In Reply to: Re: Picture too bright? #1 cause of high pitched noise! posted by Hokiebird on February 12, 2003 at 17:42:46:

      It's called "PICTURE" not contrast in Panasonic TVs.... Overblooming of contrast could be the culprit.

      Is this a plasma TV?

      Sam
      
      

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• Re: Panasonic High Pitched Noise - R. Hertz 18:19:59 02/11/03 (0)
  In Reply to: Panasonic High Pitched Noise posted by HokieBird on February 11, 2003 at 18:14:59:

  I have the same set and don't notice any unusual noises. Maybe time to call the technician.
  
  

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