Question about Toshiba CF32G40 32" TV

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Sound and picture problem

Periodically I will get a loud scratchy sound as if the speaker is shorted and then there will be many white noise lines across the picture. It typically only lasts from 2-10 seconds and may repeat 5-6 times and then everything is fine for awhile. Any ideas why?

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MAY BE THERE IS LEAKY CAPACITOR IN AUDIO SECTION OF YOUR TV OR A RESISTOR THAT CHANGE THE RESISTANCE. OR LOOK FOR A CRACK SOLDER IN THAT AREA AND RESOLDER IT.

Posted on Jun 13, 2007

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Posted on Jan 02, 2017

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Sounds like a min board fault. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
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Our Vizio VX42L has an audio problem. The sound is "scratchy." When I change the audio setting completely to the left side speaker, the noise goes away and the sound is fine out of that single...


Small component board that controls sound could be faulty. It is near the bottom of the tv and the size of about a quarter. Another possible cause is "shorting" due to assembly ...If the speaker wire comes in contact with the metal at any point you will get this type of noise. Either way, you will need to take your tv apart to truely tell if the board is bad, or the wire has been cut slightly.


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A scratchy sound may indicate that your speaker is clipping, or worse, blown. Make sure you are not running too much power to the speaker, or you run the risk of destroying your subwoofer. Reduce the power and see if the scratchy noise has gone away. If not, you may have damaged your voice coils by putting too much power through the speaker.

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Hi there , the green light just means its getting Power, it doesnt mean that its going to give sound, It could be that you dont have Drivers installed for your Sound card which is causing it too not get sound , but when it makes that static noise , its the Wire just causing Static with the Sub , just means its getting power , The + and - sign is the volume control ...Try see if you can turn it louder with the + . maybe it is low enough not too hear.....Hope this helped Bud
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Congrats, you yourself is a good troubleshooter. Just pinpointed your problem. What you just diagnoist can be easilly checked just by taking other good known speaker. If that works your speaker is short check for audio output wires. If not your card needs replacement. If need further clarifications just comment.

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Try the speakers on another PC with good working sound. This will indicate either a speaker problem or a sound card issue.

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Are the speakers old? The only thing that can make a random scratchy noise on the speakers as far as I know is a dirty volume knob. Try turning it all the way up and all the way down (with nothing playing) and see if that helps. If it does, blow them out with some compressed air. I'm thinking your issue is probably software / driver related though, does the scratchiness happen in other programs? WinAmp? Windows Media Player? .. if it does, you've narrowed it down to a driver-related issue, go to your sound hardware's manufacturer website and download the latest drivers.

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