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Aric
Aric, Technician
Category: TV
Satisfied Customers: 34777
Experience:  10+ yrs. experience installing and repairing TVs and A/V systems. Owner of A/V installation and repair business.
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Suddenly there is no sound on my Vizio TV -- just a very faint

Customer Question

Suddenly there is no sound on my Vizio TV -- just a very faint high pitched whining kind of noise (that goes away when I hit mute). I can't figure out what happened. Any ideas? I'm also unable to do close captioning; it says "operation not available." I don't know if these 2 problems are related. Help!
Submitted: 2 years ago.
Category: TV
Expert:  Aric replied 2 years ago.

How long have you had the set for and when did the problem occur?

Also, what is connected to the TV for devices (Cable Box, DVD, Game system, etc.), and do you get NO sound on the TV regardless of which INPUT you select?

Customer: replied 2 years ago.
I've had the set for about 18 months. It's connected to a Brighthouse cable box. There's no sound regardless of input, although the only way I get a picture is with HDMI 1 input.
Expert:  Aric replied 2 years ago.

First, make sure the Volume is turned up on BOTH the Cable Box AND the TV. Each has its own independent volume control and if one or the other is turned down, then you will have no sound.

Beyond this, please reset the system by following the steps below:

Please shut the TV and cable box down. Unplug the Cable box from AC power for minutes. During this time, disconnect and reconnect the HDMI cable on both ends, making sure it is secure. Then plug the cable box back in, turn on and let it reboot. Once it's rebooted, then turn on the TV and attempt to watch a program.

The sound should be back on at this point.

If you need further assistance, let me know.

 

Customer: replied 2 years ago.
Nope, didn't work.
Expert:  Aric replied 2 years ago.

Thanks for the reply. This indicates that the audio IC that drives the internal speakers has failed. It is common in these sets as they use very cheap, low powered amplifier IC's that generally heat up and fail. The IC is located on the mainboard, and requires the board be replaced. This type of repair is typically around $225 to replace the Mainboard. If you'd like you can locate a tech at the link below:

http://www.tvrepairpros.com/

If you need further assistance, let me know.

Customer: replied 2 years ago.
Your advice was to unplug the set and plug it back in, which I had already done, and then to take it in to be repaired, which will probably cost about what the set is worth, or get a new set. I'm not saying you did anything wrong, but I'm not satisfied and that advice is not worth $28.
Expert:  Aric replied 2 years ago.

If you are comfortable removing the rear panel of the TV, and removing a few screws and unplugging a wire harness, then you can fix the problem yourserlf and save quite a bit of money.

 

http://www.ebay.com/itm/VIZIO-E320VA-MAIN-BOARD-T-TQACB-5K00209-/370501510103

 

 

 

Customer: replied 2 years ago.
I'm going to contact Vizio and Costco directly and see if they'll do anything. If you are correct, it's ridiculous that an essential component should fail when the product is barely out of warranty, and that the cost to fix it should be so expensive. I'll let you know.
Expert:  Aric replied 2 years ago.
Best of luck and I hope that they will do something for you. Aric

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Aric
Aric
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10+ yrs. experience installing and repairing TVs and A/V systems. Owner of A/V installation and repair business.