Question about Toshiba 27A41 27" TV

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High Pitched Noise

My TV has recently started making a very high pitched noise. It doesn't happen everytime the TV is on, but it seems to be happening more and more frequently. It doesn't interupt the TV's sound. It seems to be coming from the back of the TV. Occasionally, we can get it to stop by touching or tapping the TV in the right spot, but that's only a very temporary fix. It's starting to become quite a nuisance. Any help is greatly appreciated. Thanks!

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  • Rebecca Vanderbeck Jun 11, 2007

    We've recently discovered that the high pitched noise seems to be coming from the connection point with the coxial cable from our cable box. It's not the cable. We tried remvong the cable to swap it out, and the TV continued to make the high pitched noise when the cable was disconnected. We are able to temporarily stop the high pitched noise by adjusting how tightly the cable is screwed in.

  • Anonymous Dec 20, 2008

    I have a 27" Zenitha model b25a24z8 manufactured in 1999. I think I bought in 2000 or 2001. Anyway it has beedn great up to about a mouth ago. It started making this high pitches squealing/. whistling noise; when it's off and when I try to turn it on it shuts right back off. After a few tries it will come on and stay on intermittently. While on the vertical and horizontal hold is going crazy. Each time the screen moves vertical or horizontal it makes a loud (zzzzzzzz sound) like something being shocked and then it cuts off. After about 10 to 15 minutes off this, the tv becomes fine like nothing was ever wrong picture wise. The squealing sound is very faint if any until I turn it off and 10 minutes later (like it's gotten cold); it starts with the squeal ing sound loudly again. Please help.

  • Anonymous Apr 09, 2009

    I have the same problem. I couldn't tell you what kind of TV I have at the moment, but it's an HD and about 5 years old or so. I noticed that when I pushed the cable up a bit the noise stopped. I'm able to manage the incessant whining by stuffing a folded up piece of paper under the cable where it connects to the TV, which holds the cable up enough to cut the noise. I have to adjust it EVERY time I turn on the TV though. It seems to work for the duration of the time I have the set on, but sometimes it is more difficult to get the paper adjusted just so (it doesn't seem to be the same every time). I'm posting this because none of the proposed fixes even made sense to me. The high voltage leak solution sounds like a possibility, but I have no idea how to go about that fix. Can anyone give instructions on how to fix this problem?

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Most high pitch noise comes from the anode conection on the picture tube thats connected to the flyback anode cap thats mean there is a high voltage leak,to stop the noise you can discharge the high voltage take off the cap and clean with alcohol.if the noise continue.you will have to put some red or clear silicone both the cap and tube stick together leave to dry for about 2 to 4 hrs.this will eliminate the leaking.good luck.

Posted on Jun 17, 2007

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Sounds like you have a coil or transformer vibrating in the horizontal output circuit. If you are experienced in taking the set apart, you may touch the circuit board in the area of the horizontal output circuit USING AN INSULATED TOOL such as a 8 inch long plastic rod. Use the rod to press on various parts of the circuit board and listen to the sound. If it changes,work to the most sensitive place and you're close to the problem. The yoke ( the coil around the neck of the picture tube) can also make a high pitched sound if the horizontal windings are lose in it. I hope this might give you an idea as to what is happening! Stargazer

Posted on Jun 16, 2007

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I would check out the horizontal stage for cold solder joints or bad solder spots.

Posted on Jun 15, 2007

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