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High pitch noise from LG Flatron TV

High pitch noise when TV has been on for over 1 minute. When volume has been turned down, the TV still omits ear piercing noise.

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  • Goggle Mar 30, 2008

    I purchased a Sansui DTV3200 32" T.V. within the past month. I love the apperance of the T.V. and the picture is great. The audio seems to have a echo noise. Has anyone else had this problem. I have the T.V. hooked up to cable and the T.V. is in an entertainment center. I have adjusted the audio memu but nothing seems to work. Any suggestions. Thanks.

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Hi there!
You may want to start by checking for suspicious looking components or hot spots. There may be some Caps faulty in the power supply or Horizontal. Good Luck, Jus004

Posted on Mar 16, 2008

JUS004,
Sounds like the high pitched noise after warmup is being caused
by either a coil or tranformer which is vibrating (ringing). Next
time it emits this noise try moving the set or tapping on the cabinet and see if it quits singing. If not try flexing the RF connector where the cable is connected. This may flex the main
pc board enough to disturb the problem temporarily. If you verify
that the problem is a singing coil or transformer you'll have to
have the part isolated and either replaced or wedged and glued.
Hope this helps,
Caseybee

Posted on Mar 20, 2008

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Posted on Jan 02, 2017

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1 Answer

My sansui tv makes a loud high pitch noise. I have had it 3 years, it is a a riging noise, and hard to hear the tv shows. what do i do?


ever since for ever, ive always heard a loudish high pitched ring from analog tv's. e.g. i would know a tv was on in another room even if it was muted. ive told other people about it but they dont seem to hear what i hear. so im gonna geuss either

a. analog tv's all make that noise to a verying degree but most people just dont notice it or subconciously cancle it out as normal.

b. its a kind of hyper sensitivity to high pitched noise, in essence, tinitus.

on a final note, its not medical as i always pass my hearing tests. but to answer your question, either buy a digital tv or turn up the volume.

Sep 09, 2010 | Sansui 27" TV

1 Answer

I have a samsung neo 32 inch picture tube tv. When I turn it on there is no picture or sound, but there is a light high pitched noise.


That high pitched sound is likely the Horizontal Output section trying to work. It operates at 15,750 Hz or at the upper end of normal human ears.
It will sound like a high pitched whine.

This is a section or your television that you don't want to fool with unless you are quite familiar with servicing your set. There are very high voltages involved and only a qualified technician should tend to this defect. It maybe easy to fix or it may be quite involved. Get an estimate first then decide to go further or not. There is a potential fire hazard here so don't operate your set until this is resolved.

Zashiban

Jun 23, 2010 | Samsung DynaFlat TX-P2764 27" TV

1 Answer

My tv is making a high pitched squealing noise...its killing ears


holy god i know i know i know i know it IS torture. My tv had the same problem and i had to live with it for over a year and a half... i have spent several months searching for answers of what causes this terrible sound, but the only answer i know if is a sledge hammer. sorry, but i had to give away my tv and purchase a new one.

May 31, 2009 | Sharp Televison & Video

2 Answers

High pitched noise coming from set.


hi there high pitched noise form the set indicates that one of the coils inside the set are lose this happens with age and heat the coils are made of copper and are tightly glued or soldered together and can be as small as a bit of hair of as big as a pen tip the problem is that the coil is now vibrating which is causing the high pitch sound and sound be quite easy to identify with a good ear!

sometimes these can be sorted with a quick bit of solder to hold it in place on the main bord of where the coil is, but some times there is no cure due to very small braiding of the copper wire any attempt to solder may cause damage and breakage,

You may be able to replace the coil with another one from a good components store with the same value best thing is to take out the noisy coil and take it down to be replaced

the reason it appears worse when first turn one is that the coil is cold and vibrates alot more just like when the set is warm the coil expands like most metals do which stops it vibrating so much

i hope this helps a little good luck

Feb 05, 2009 | GE Televison & Video

1 Answer

Trouble turning on tv. High pitched noise/click.


The mainboard might have some loose components, or cold solder , or may be the filter capacitors are becoming faulty. Yes it is worth repairing, bring it to the repair shop. Cheers.

Nov 25, 2008 | RCA Televison & Video

1 Answer

Samsung HDTV DLP high pitch wine, intermittent


Your color wheel is broken you can get one at partstore.com.

Aug 12, 2008 | Samsung DLP HL-P5663W 56" TV

1 Answer

High-Pitch Noise


Problem with your TV audio processing unit. Damaged audio processing IC must be the coz. else audio amplifier IC must be faulty. Contact service centre authorised personnel

Nov 17, 2007 | Samsung TXN3245FP 32" TV

1 Answer

High pitch sound for Sony FD Trinitron WEGA KV-27HS420 27" TV


The high pitch squeal you hear is usually caused by a coil vibrating, normally in the horizontal circuit. I've also seen the ferrite bead on the horizontal output transistor do this, but, it is rare. I normally will repair this by finding the coil and "tightening" it. To tighten a coil, technicians use different chemicals, such as, a hot glue gun, rubber silicone or even finger nail polish. I will find the coil that screams by starting with the usual suspects and using a wooden dowel, barely touch the coil and if the pitch of the noise changes, then, thats the coil that needs repaired. If you do not know your way around the inside of a television, I never recommend you do so, since, this procedure must be done with the set turned on and you poke your hands around the inside of the set by the high voltage circuit. Hope this helps your decision.

Mar 04, 2007 | Sony FD Trinitron WEGA KV-27HS420 27" TV

1 Answer

High Pitch Sound From Samsung TXN3071WHF 30" TV


I think its the flyback and its starting to leak. this is a component responsible for the high voltage of your tv set. always observe safety in dealing with this. Have it check by a qualified technician. Good luck!

Feb 25, 2007 | Samsung TXN3071WHF 30" TV

1 Answer

High pitch noise


what you are hearing is the mechanical vibrating of coils & or transformers in the tv. 1st and easyest is to hot glue the parts that is making the noise down. if that does not work, removing & reinstalling the part is next. the last is replacement. the most likely parts causing is the 1. horizontal linearity coil, 2. the run or switch mode transformer, or 3. the flyback transformer. good luck.

Jan 09, 2007 | Zenith C27F33 27" TV

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