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I have a model TXB1920 with an annoying buzz, depends on picture. Older sets had a 'sound trap' which separated the audio signal -- is there such a circuit and is it adjustable?

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No, your tv doesn't has something like that. The buzzing is caused by the power source being overstressed - the brighter the image = higher the power consumption of the tv = higher stress on the power source = higher noise.
On a tv of that age the problem is caused by aged electrolytic capacitors, they must be replaced as soon as possible, even the failure of a single one will destroy all the others and the entire tv with them,

Posted on Jun 04, 2010

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Posted on Jan 02, 2017

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2 Answers

How do i fix the sound?


Check the system settings first. Go to the picture settings, and check whether the reviving system is set right. That is; do it match the color system adopted at your country; whether it be PAL, SECAM, NTSC .58, NTSC 4.43 etc, whatever it may be. If your TV set is a multisystem one, set this system settings to "Auto"
If all are OK, and still there is no audio from the set, 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. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

Aug 08, 2014 | ViewSonic N3735W 37 in. LCD TV

1 Answer

My tv has no sound


If you are feeding an rf signal to your tv, the problem lies within the tv's audio circuits after demodulation of the signal. Try feeding a composite video and audio signal into set and see what happens. If set works then problem is definitely in the front end of the tv. If still nada you have a repair on your hands.

Nov 23, 2013 | RCA 27V530T 27" TV

1 Answer

TV making loud buzzing sound


More sets than you might imagine have this kind of problem---I a regular TV it is usually a transformer that is vibrating hard enough to make the sound---the higher pitched sound is just that--a sound.

If this is a direct view(means not a flatscreen and has a Glass Picture tube it will be either the high voltage transformer or one of several smaller transformers.

This can usually be fixed---seen a few so loud the cats in the house run away.

Let me know model number of set for more information.

On chance it has the high voltage transformer I attach a photo of what that looks like.

5_23_2012_9_22_57_pm.jpg

May 23, 2012 | Zenith Televison & Video

1 Answer

Manual


If you need a manual GOOGLE the model number with manual.

No sound:
speakers turned off (check set up and audio menus)

audio set to sap or mono

audio circuit problem (put ear to speaker to set if any sound or buzz)

Unlikely but: if audio coming to rear jacks on set from a box--the box could be the issue.

Mar 16, 2012 | LG M3200C-BA 32 in. HDTV-Ready LCD...

1 Answer

I NEED SONY BRAVIA T32 FULL MANUAL...how to conect to computer and camera


Hello there,

Here is the link to the full manual:
http://support.sony-asia.com.edgesuite.net/consumer/IM/4110401121.pdf

Before connecting your devices...
The signals that enter the TV and connected devices will need to be output in the correct format using the suitable connections. Below are the different types of video connectors. When connecting the TV, use the inputs that are available on your devices that provide the best video performance.
Video performance level Name Aspect Signal transmitted Separate audio connection required arrw.jpg HDMI cnn_hdmi.jpg Picture + Sound No DVI*1 cnn_dvi.jpg Picture Yes
l.jpg r.jpg
L-AUDIO-R Component video cnn_component.jpg Picture S-Video cnn_s_video.jpg Picture Composite video cnn_composite.jpg Picture RF/Coaxial cnn_coaxial.jpg Picture + Sound No
*1 If the equipment has a DVI jack and not an HDMI jack, connect the DVI jack to the HDMI IN (with HDMI-to-DVI cable and/or adapter jack), and connect the audio jack to the AUDIO IN (L/R) jacks of HDMI IN. (The DVI connector is for video signals only) To enjoy the best visual experience with your system, it is preferable to connect your best devices with the highest quality connections available. For example: your Blu-Ray Disc player or HD Set Top Box with HDMI, followed by your DVD player with Component, then your Video Cassette Recorder with S-video etc.Note: The quality of the picture also strongly depends on the quality of the cable used.
HDMI The High-Definition Multimedia Interface (HDMI) is an all-digital audio/video interface capable of transmitting high definition video and audio signals. HDMI provides an interface between any compatible digital audio/video source, such as a set-top box, a DVD player, a PC, a video game system, or an AV receiver and a compatible digital audio and/or video monitor, such as a digital television (DTV). DVI The Digital Visual Interface is capable of transmitting high definition video, but does not transmit sound. You will need to use the audio connectors of your device (usually Optical/Coaxial digital, or RCA). It is possible to connect an HDMI device to a DVI device using a HDMI to DVI adapter. Component video Component video is an analogue connection. It is capable of transmitting high definition signals. Component does not transmit sound. You will need to use the audio connectors of your device (usually Optical/Coaxial digital, or RCA) S-Video Separate video, abbreviated S-Video and also known as Y/C is an analogue video signal that carries the video data as two separate signals (brightness and colour), unlike composite video which carries the entire set of signals in one signal line. S-Video, as most commonly implemented, carries standard definition video. It does not carry audio on the same cable. Composite video Composite video is an analogue video (no sound) format. This is the connector you should use if you do not have any other connector available, in terms of quality. RF/Coaxial RF Coaxial Cable connection is used for transferring television signals (audio and video) originating from an antenna or cable box to a Television.



Hope this was helpful to you.
Goodluck
Elect_Comp

Aug 10, 2011 | Televison & Video

2 Answers

LOUD BUZZING/HUMMING SOUND- CAN HEAR OVER AUDIO


have someone check speaker ground to the TV chassis. Your speakers are picking up reverb from the Video Signal.

Aug 19, 2009 | Vizio L37 Television

1 Answer

Buzzing sound coming from TV Speakers and any external speakers


Your model has all the audio and video circuits that are all within the Control Box unit which has to be replaced as a unit. You can get one at the following link. You would have to leave them a email as they dont list the polaroid Control boxes, But I know they have one for your model. Just click on the " contact Us" link and let them know the model number they respond quickly.
http://servicemanuals.vstore.ca/
This is what the control box looks like.1099091.jpg

May 05, 2009 | Televison & Video

1 Answer

Buzzing loud noise constantly.


I HAVE A RCA 50 HDTV DLP MODEL #D50LPW134 IT MAKE A BUZZING SOUND AND NO PICTURE i CHANGE THE BULB AND STILL NOT WORKING.

cantrin@hotmail.com

Ken

Dec 12, 2007 | RCA Scenium HDLP61W151 61 in. HD-Ready...

1 Answer

Buzzing sound from my tv


tv makes a buzzing sound when i turn on the set, than stops.

Dec 10, 2007 | Harsper HP-4200VPM Television

1 Answer

Buzzing sound in Battlefield 2 (PC Game)


check to see if you have the latest audio driver from Dell, as it's sounds as there is a conflict with the game and the audio, click the link for dell drivers on your model. You may have inadvertantly loaded up windows sound drivers from a windows update, that would cause conflict as it's just a generic driver and not a correctly installed audio driver http://support.euro.dell.com/support/downloads/driverslist.aspx?c=uk&l=en&s=gen&ServiceTag=&SystemID=INS_PNT_P4_9400&os=WW1&osl=en&catid=&impid=

Jun 19, 2007 | Dell Inspiron 9400 Notebook

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