Question about Vizio 42 in. LCD TV

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My vizio is now making a annoying buzzing sound coming from the back of the flatscreen...and the tint of the picture is darker...what might this be?

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Power supply is straining. Check for bulging caps on the power supply board. The AC cord will lead you to that board.


my vizio is now making a annoying buzzing sound - crikett_31.jpg

Posted on Mar 20, 2011

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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

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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

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Vizio makes an ok LCD, but if you notice they no longer make plasma. they stopped last year. Anyways. the buzzing sound is semi serious, it sounds as though you have a capacitor leaking. It is best to get it fixed before it goes out all the way, with it buzzing it will be easier to identify. Best of luck

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my tv is new too and also makes a buzzing sound and i turned the DCR off and it worked to thanks for the help!!

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The TV usually hums when the backlight setting is too low. So turning it up should get rid of the problem. To do this please follow these instructions:

1. Turn the TV on.
2. Press the Menu button on the remote, located right below the channel changing button.
3. Press the down direction button, located at the middle of the remote. Press that button until the backlight is highlighted.
4. Press the right direction button until the backlight is at 100.
5. Press the OK button and then the Exit button until you get back to your picture.

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Ummm... i have the same problem and its EVERY type of cable that causes the red tint. its the tv itself. replacing all the darker colors with red. explain that?

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