I tried plugging in my headphones to my Vizo VU42LFHDTV10A television, but got no sound. The user manual does not have directions or troubleshooting for this problem. I believe I have the correct jack on my headphones. Is there a setting I need to change? The TV is set up with extra (external) speakers. Please help. Thank you.

It sounds like you've already tried some basic troubleshooting steps, but there are a few more things you can try:

1. Check your sound settings: Sometimes your computer might be set to use the wrong output device. Make sure your headphones are selected as the default playback device.
2. Check your headphone jack: Make sure your headphone jack is clean and not damaged. If there's any debris or dust in the jack, try cleaning it out with compressed air or a cotton swab.
3. Check for loose connections: Make sure your headphones are plugged in all the way. If they're not, you may only be getting sound from one ear or no sound at all.
4. Try a different pair of headphones: If you have another pair of headphones available, try plugging them in to see if they work. If they do, the issue may be with your original headphones.
5. Uninstall and reinstall your audio drivers: Sometimes even if your drivers are updated, they can become corrupted. Try uninstalling your audio drivers and then reinstalling them.
6. Run the Windows Audio troubleshooter: Windows has a built-in audio troubleshooter that can help identify and fix common audio problems. Go to Settings > Update & Security > Troubleshoot > Playing Audio and run the troubleshooter.

If none of these steps work, you may need to contact your computer manufacturer or a computer technician for further assistance.

That is a good ideal Lynda. I have no experience with those headphones so my ideas/troubleshooting is just general. Can you try them on another device? Are you sure you have them plugged into the correct jack on the TV? Are the headphones and adapter fully charged or have fresh batteries? There is the possibility that they are defective. I also use a set of headphones from my TV - iLuv bluetooth headphones. I use them when I am on the treadmill.

Contacts inside the headphone socket damaged; provided the Headphones you use is OK. It can be replaced. Contact any service technician. Electro help

Have you checked the owner's manual? It will normally have a chart to isolate and troubleshoot problems.
If that does not help contact Vizio tech support if you are still under warranty.
As a last resort someone may have the answer for you.

Sound Loss in Dell Computer Headphones b> Most Dell computers have special hardware and software that are set up to automatically adjust the configuration of the headphone ports when headphones are connected, muting the primary speakers in the process. If no sound is coming out of your headphones, this is most likely caused by a configuration issue that can be resolved with a few simple steps.

Basic Headphone Troubleshooting
If no sound is coming from your headphones, confirm that the headphones work properly by using them with a different device. After this, confirm that the headphones are plugged into the proper jack. If your CD/DVD drive has a headphone jack in front, audio will only be played through this jack when you are playing a disc. On a desktop computer, the correct jack to use for headphones is usually color-coded green, while notebook computers will have headphone icons next to the correct jacks. Finally, check the speaker icon in the system tray to make sure that your sound output is not muted. b> Troubleshooting Notebooks b> Most Dell notebooks use a special type of audio jack. The jack, along with the sound drivers that are installed, automatically detect whether headphones or speakers are plugged in and adjust the sound output accordingly. If this does not happen when headphones are plugged in, the sound drivers may be at fault. Visit the Dell support website and download the most recent sound drivers for your notebook. If this does not help, some users have reported success with removing the sound drivers completely and letting Windows install generic drivers automatically. Last Resort b> If all other options have been exhausted, the last resort in troubleshooting a headphone jack is running a complete system recovery operation. This will completely erase all of the information on your primary hard drive partition and reinstall Windows along with the drivers for all of your hardware. This is an extreme measure, as you will lose all of the information that you have stored on the hard drive. However, it will resolve the issue if it is caused by a software problem. If the issue remains, the headphone jack must be replaced. Hope this helps.

b>

Sounds like your controller board is bad or a power supply issue. Try to change input. If it does the same thing it is the controller board. You can get a replacement on ebay if no longer under warranty

Find the model number on the back of the VIZIO remote control.

Go to the link below and enter the model number in the SEARCH BY MODEL NUMBER space provided or look for it in the scroll down SELECT YOUR PRODUCT menu.

http://www.vizio.com/support/

You should see a picture of your product and underneath it a small grey tab marked SUPPORT about halfway down the page.

From there you should be able to safely download a copy of the USER'S MANUAL which will contain the codes for your TV. Just click on the user manual link highlighted in red.

While you are there you can also download a copy of your TV's user manual if you don't still have it. The tv's model number will be on a sticker on the back of the set.

Good luck, hope this helps. Keep us up to date on your progress.

You need to remove the unknows first. Try the speakers on another device. You could try a walkman, another computer or anything with an 1/8th" Stereo jack. Prove that the speakers work or get a pair of headphones to check out your PC. If you are using the green jack on the back try the headphone jack on the front. If the front works and the back doesn't check the sound card options / set up. Some have an icon by the time in the bottom right corner others will need to be found under the sound effects manager or the sounds and audio devices icon. I suspect if you get this far something has been turned off in the software.

the television red light comes on but does'nt chance to green. so no picture or sound