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Buzzing noise on Murphy LCD TV

I have a Murphy LCD TV, model TV37F10DM, There is a loud buzzing noise from it when then the programme on the screen goes dark or Black

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Garfunkel01
  • 56 Answers

SOURCE: Loud buzzing

check your connections again, if you have the audio and video reversed you will get this exact problem no video/ fuzzy video, and squealy noise out of only one speaker (other will likely sound correct) You're watching the sound channel, and listening to the video channel basically... hehe

Posted on Aug 16, 2007

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  • 14 Answers

SOURCE: My 32" Philips LCD TV makes a annoying buzzing

The main cause off buzzing from these sets is the transformers on the psu. This can be solved by sealing the transformers with a sealant spray.

Posted on Mar 18, 2011

caroldon
  • 17130 Answers

SOURCE: Polaroid flm-373b lcd tv - making a loud buzzing

Possible that the main power supply unit which is the SMPS- switch mode power supply- has a faulty capacitor or in the INVERTOR board which has changed the value and so the frequency being changed can cause higher huming level- reduced to lower frequency.
so check the board for leaks , if so replace. Also check if the threshold voltages are below level in these circuits. if so the capacitor can be identified. If there is change after the component heats then simulate the circuit board and confirm using a hair dryer.

Posted on Sep 23, 2011

jerryg50
  • 1689 Answers

SOURCE: tv making loud buzzing noise

A common cause are failure of decopling capacitors in the audio section, and or the circuit board power distribution that feeds the audio board. Most of the capacitors are surface mount components. The standard fix is to start by changing the circuit boards that have the defective parts.

If the set is under warranty, call for warranty service. Out of warranty service is expensive for these TV sets.

Jerry G.

Posted on Aug 10, 2012

gopakumarg43
  • 75599 Answers

SOURCE: My LCD tv makes a buzzing noise but won't turn on

Check its back-light inverter board. Replace it.

Posted on Aug 21, 2012

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1 Answer

When turned on the screen is blank and makes a high pitch buzz


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Dec 13, 2015 | Televison & Video

2 Answers

Tv making loud buzzing noise


A common cause are failure of decopling capacitors in the audio section, and or the circuit board power distribution that feeds the audio board. Most of the capacitors are surface mount components. The standard fix is to start by changing the circuit boards that have the defective parts.

If the set is under warranty, call for warranty service. Out of warranty service is expensive for these TV sets.

Jerry G.

Jun 12, 2012 | LG 32LG30 32 in. LCD HDTV

1 Answer

JVC TV LCD Model LT-42PM30 intermittant buzzing noise


Most likely suspect is the power supply board---transformers on that board can and do vibrate hard enough to cause this.

At our shop we either locate the part creating the sound and treat it to hot blue to muffle and remove the noise or if confirmed to be on power board--REPLACE THAT BOARD.

Apr 29, 2012 | Televison & Video

1 Answer

My 32" Philips LCD TV makes a annoying buzzing


The main cause off buzzing from these sets is the transformers on the psu. This can be solved by sealing the transformers with a sealant spray.

Jan 21, 2011 | Philips 32PF5531D 32 in. LCD Television

2 Answers

Loud buzzing noise on vizio tv


It sound like you may have sound processor problem which is part of the main board, I would also look at the 12vdc from power supply to make sure it is clean DC.
Parts: http://www.shopjimmy.com/catalogsearch/result/?q=l37hdtv10a

http://en.wikipedia.org/wiki/Capacitor_plague

Dec 22, 2009 | Vizio L37 Television

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My tv is making a loud buzzing noise


Bearings in color wheel going bad and needs to be replaced. Call a local tv repair shop on pricing and availability of color wheel for your model and chassis
number.

Dec 03, 2009 | Samsung DLP HL-P5663W 56" TV

1 Answer

Buzzing/fizzing noise from back of sony flat screen tv


Below is an image of rear side of your TV, Sony KDL-40W5500
Top right corner is marked there and possible cause of noise seems back light inverter board, there are high voltage going to CCFL inside LCD panel and seems high voltage leakage causing that buzzing/ fuzzing noise.

Replace back light inverter board upon voltage leakage confirmation.
Thanks.

bd073ee.jpg

Oct 23, 2009 | Sony BRAVIA KDL-40V2500 40 in. LCD HDTV

1 Answer

A piercing high pitched buzzing noise when on. The sound volumne does not affect the buzzing. Always very loud.


You didn't post a model number but if this is a CRT TV (non-flat screen) the noise may be coming from the high voltage circuit and may be a warning sign of failure in the near future.

Aug 25, 2009 | Samsung Televison & Video

3 Answers

Loud buzzing noise


sounds like the color wheel needs to be replaced very easy repair on that model Samsung.

Jul 05, 2008 | Samsung HLR5067WX 50" Rear Projection HDTV

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