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High Pitched Noise on TV

2000 35 inch TV makes a high pitched noise when TV is turned on.

Posted by Tim Best on

  • 10 more comments 
  • Tim Best Sep 16, 2007

    This is a panasonic tv

  • Tim Best Sep 16, 2007

    model # CT35G25B

  • TTune Nov 04, 2007

    Our TV makes a high pitched noise after it's been on for a while. The noise comes and goes but is related to how much light colour is displayed on the screen at the time (e.g. high pitched noise when there is a white background in the scene, which then goes quiet when the screen is displaying a darker scene). The noise will temporarily go away when the input cable is torqued to one side. The TV is a RCA F25261. Any suggestions? Thanks.

  • TyeG Nov 13, 2007

    I have a 5 year old Curtis mathis 19" television. After it is on for a short time this loud high pitched noise begins. What could it be and can I fix it.

  • rhenry501 Dec 06, 2007

    Same deal, High pitched sound comming from the TV. I've checked all the inputs, they are secure. All the fittings are tight. I moved the cable box, the DVD player. Un hooked everything, re installed every thing. I've even considered sacrificing a small woodland creature to the TV no avail. Could it be a fan? Is there a fan in there? I'm pretty handy, and have no fear of tearing stuff apart to fix it. (I'm a biker and a gunner, we love to tinker......)

    Some one send me in the right direction.



  • ksb729 Feb 03, 2008

    Have same problem also, on a Panasonic CT 3283W. And on ours it is also related to the amount of white on the screen, the more white, the more noise

  • Fred69 Mar 17, 2008

    I have a 2002 Panasonic 27d12df tv... When i turn it on it stays black and it has a high pitched noise and will not turn off until I pull the plug... Is this a power supply problem and how much will it cost to fix...? Should i just buy a new computer..? Any advice will be greatly appreciated...

  • toben Mar 30, 2008

    Sharp 27J-S260 made dec 1997. Pic & sound fine. But high
    pitched noise/loud squeal (>10KHz) intermittent when TV
    is on. Torquing the cable connector and/or pressing on
    various parts of the external case can make it go away,
    or louder. does not seem to be at all related to the
    picture, or whether signal is from rca jack composite
    or barrel cable connector. Been like this for a long
    time, but pic is still great. Using rubber bands to keep
    pressure on the threaded cable connector with some success
    at living with this very annoying symptom. Many, many thanks
    in advance for your advice/expertise.

  • cmfosmire Nov 28, 2008

    radomly emits high pitched noise that last between 5-10mins, sometimes longer.  Almost unwatchable now!

  • allieho_14 Feb 04, 2009

    The freaken thing squeaks like dying pig! It just happened about 2 months ago with no let ups. Now it is seeming to become more frequent and yes, more annoying.

  • Anonymous Feb 08, 2009

    I have a 32in sony wega tv i also and the high pich noise is very annoying please somebody help us

  • mdystroy Feb 08, 2009

    I also have 32in sony wega tv with a high pich noise coming from rear of tv when i push on rear where cables insert noise seems to go away but when i stop noise comes back on any idea what problem i have?



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Radames Pagan

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Posted on Apr 30, 2010

  • Radames Pagan
    Radames Pagan May 01, 2010

    check if you hear the noise in the fly back. if the noise in in the fly back put 5 or 6 drop of krazy glue in the up hole.. if your tv is G/E or RCA change the cap near pitch transformer. is a 680mf-200v(c4107k)



Lashawn Robinson

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Is this an RCA or GE? If so then the horizontal output is shorted. And maybe a capacitor or 2. Need model number to be more sure.

Posted on Sep 16, 2007



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My set was making a high-pitched squeal from the Co-ax cable that digital cable comes through. The sound stopped when I would push the threaded connector down or up. I was looking for a way to have constant pressure applied and lifted the tv, as soon as i had it tilted forward a bit the sound disappeared. So I stuck a ball point pen under the back of the TV to keep it in that position and sure enough; NO MORE SQUEAK!

Posted on Feb 03, 2010

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