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What may cause a high pitch hum.even when muted or volume turned down?

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Claude Kayser

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Samsung DLP making a buzzing noise, but works fine - High Def ...

www.highdefforum.com > ... > Rear-Projection TVs

Dec 11, 2009 - 7 posts - ‎5 authors
My Samsung HLP-5063 DLP starting making a loud buzzing noise recently. ... I've only used it to watch TV for a half hour or so at a time, as I have a new LED LCD in my room. ... Other than that, I can't figure out what might be causing it. .... a humming high pitch sound, it will be an issue with the color wheel. RCA D52W25 making high pitch noise - High Def ...
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Apr 15, 2009
humming sound in my dlp - High Def Forum - Your High ...
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High pitched sound coming from my Samsung DLP TV - Open Forum ...

www.dslreports.com > Forums > Social > Open Forum

DSLReports
Oct 3, 2009 - 30 posts - ‎7 authors
Its so high pitched that some people can barely hear it, but I guess I have sensitive hearing. ... Anyway, this seems to be a fairly common issue and it is caused by either the ... You're probably hearing a transformer humming.

Posted on Jan 08, 2016

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1 Answer

High pitch noise from speakers


Hello there!
Sometimes High pitching its just that, static on the area, like if you are near a microwave, or near other electronic equipments, but, if the skreetching sound keep going or even if you do nothing it could be a line inside the sound card, or you need to clean the volume botton with special electrical cleaner. other that these, its contacts, or bad cap for the volume board inside.
Good Luck!
Carl

Apr 25, 2017 | Acer Computers & Internet

1 Answer

I have a crosley record player but there is a high pitch tone if I get a better needle will that help with the sound? The tuner adjustment button and volume really doesn't help the super high pitc


Not at all in this case. You either have a loose wire to connections to the cartridge, which can be fixed by hand. Just push the wires on to the cartridge. Or you have a fault in the power supply of the deck. Most likely a mains filter capacitor that is letting the 50hz mains hum in.

The hum will either be caused by a poor earth connection or a power supply problem. The stylus would not cause any hum at all.

Mar 22, 2013 | Audio Players & Recorders

2 Answers

I have a Sony STR-DG520 5.1 receiver. My problem is that I can hear a high pitched background whine from all the speakers, even if the volume is set to zero or muted! If I switch the audio source off, the...


do u have the unit earth grounded? sounds like AC hum, most amps have a ground lug, make sure that is grouned and the power plug to o the amp has a good ground.

Jun 15, 2010 | Sony STR-DG520 Receiver

1 Answer

Loud, high pitched hum from speakers . . .


This is GroundNoise from the TV's Backlight.

Sorry, but unless you are a Technician, you will simply need to ignore it.

If you are a technician, you can fix this by grounding the Audio ICs to the Power Supply (details not provided)

Jan 30, 2009 | JVC LT-26X506 26 in. LCD Television

1 Answer

The television has a loud humming noise.


change the power supply capacitor

Apr 01, 2008 | Televison & Video

2 Answers

H700 headset can't hear me!


Push both volume buttons at once to turn Mute off. You should hear two beeps, ascending in pitch to indicate mute is off. If they go down in pitch mute is being turned on.

May 09, 2007 | Motorola Mobility H700 Wireless Headset

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

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