Question about Westinghouse Digital 37" Class 720p 60Hz LCD HDTV - Black VR-3710

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When turning on TV there is a noise that sounds but no audio

Seems that the noise is coming from the power board

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LG 55LS4500 55 in. TV has sound through speakers, no audio except a hum from headphones and the optical digital to analog output fiber lights up but no sound output What board is bad?


Hi Louis,
The audio circuitry is located in the main board. Try unplugging the TV for a while and try again if the audio comes back.
I would suggest to check all your settings in the audio section first and if everything seems OK then the main board should be replaced.

Feb 26, 2017 | LG 55LS4500 55 Inch 1080p LED LCD HDTV -...

1 Answer

LG 55LW5600 Tv the screen no longer turns on. The power turns on but no sound OR audio come up. Main board symptoms seem to be audio still works, but no video. Could this be power board?


Might be. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

Dec 19, 2016 | LG 55 55LW5600 3D LCD TV

1 Answer

Tv doesn't power on


hi i'd check the voltages on the connector on the power board, it sounds like you have 5v standby, i'd check for 12v and 24v or look for a tv tech in your area

regards
shaun

Mar 18, 2014 | Westinghouse VR-6025Z 60" LCD TV...

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

Hi: My Magnavox flat screen turns on and off. It also makes a high pitch noise and then there is no sound and it also shuts off. Is it worth fixing?


Hello, what's the model or size of screen for the magnavox, the high pitch noise could be an audio power amp starting to get intermittent, and the power on/off could be due to the over current sensor circuit detecting the audio problem. Depending on the model number you would have a seperate power, audio and signal board in the TV. If he TV is 27" or smaller all these circuits are part of a mother board.

Jul 28, 2010 | Televison & Video

1 Answer

Vizio speakers make a buzzing noise


The audio board on your 47" Vizio has gone bad. Replace that board will fix the problem.

Jan 21, 2009 | Vizio VO47L 47 in. LCD TV

2 Answers

Weird, annoying noise every so often


Is this happening on just on input?

If so... Check your connections. If you are using the component cables, make sure you haven't plugged the right audio into the red video input. it's a common mistake. I see it all the time.

If this is happening on all inputs, be sure the noise is coming from the speakers. Then replace the main board.


Nov 28, 2008 | Philips 42PFL7403D/27 42 in. LCD TV

1 Answer

LG 37" lcd tv weird noise using hdmi ports bought new main board still does the same thing! Need solution! Lg says "i don't know never heard of this problem", BS!!!!! Ok remote for the tv worked before...


Use an other HDMI cable. Still the problem persists, Check the speaker/s. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Pull up older posts. Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. http://electronicshelponline.blogspot.com/

Mar 09, 2017 | Televison & Video

1 Answer

LG 47" LCD TV - 47LC7DF Clicking Noise


I was told that these clicking noises (which happen on my Magnavox LCD too) were due to the "power required" at the internal switch. Seems that the power required to immediately turn on the TV is too much for a standalone household outlet, so it "surges" power in a series to get enough there. Hence, the clicking sounds are actually mini power surges to send more power to the internal circuits to turn the TV on.

If your set is like mine, these noises generally stop after a minute or two, correct?

Dec 13, 2007 | LG 47LC7DF 47 in. LCD HDTV

1 Answer

Power


yes you have defective horizontal output! that is from the power section near at the flyback!

Oct 21, 2007 | Sony KV-36FV26 TV

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