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Xfinity TV Audio Issue Troubleshooting - Xfinity Support
https://www.xfinity.com/support/articles/troubleshooting-audio-issues-with-xfinity-tv
Access the TV Adapter's or TV Box's main menu. Select Setup. Select Audio Setup. For the Set volume to optimal stereo option, select Yes to automatically adjust the volume to the optimal level for stereo output. Note: If you select No, your current volume settings will be retained. It may be necessary to repeat this procedure several times.
XFINITY TV No Sound - How to FIX? Comcast Xfinity - …
https://www.youtube.com/watch?v=jXIxIDC5WRw
Comcast XFINITY TV No Sound? Can't get any audio out of your TV when you're trying to watch stuff on Xfinity Cable box? Here's a solution video that may teac...
Why Your Comcast Video Doesn't Have Sound - The TV Answer Man!
https://tvanswerman.com/2019/01/03/why-your-comcast-video-doesnt-have-sound/
Hit the Menu button on your Comcast remote control twice. Then click on Audio Setup on the Menu listings on your screen. After that, look at the HDMI sound setting. If it’s OFF, turn it to ON. Then hit the Menu button again to clear the screen. Your picture and sound should be on at this time.
No audio through HDMI : Comcast
https://www.reddit.com/r/Comcast/comments/acqyet/no_audio_through_hdmi/
Using an hdmi cable, the picture looks great, but there is no audio. I've gone through multiple troubleshooting steps found online and with xfinity tech support. Their previous box worked fine, as does the Amazon Fire that is connected through hdmi.
Comcast: You Have a Picture But No Sound ... - The TV ...
https://tvanswerman.com/2018/04/04/comcast-you-have-a-picture-but-no-sound/
Hit the Menu button on your Comcast remote control twice. Then click on Audio Setup on the Menu listings on your screen. After that, look at the HDMI sound setting. If it’s OFF, turn it to ON. Then hit the Menu button again to clear the screen. Your picture and sound should be on at this time.
please help! no audio via HDMI from comcast motorola ...
https://www.avsforum.com/threads/please-help-no-audio-via-hdmi-from-comcast-motorola-dcx3400.1358857/
Check the audio setting in the STB menu. If that looks good, check the audio settings in the Denon. It sounds as if the Denon isfine since you said the DVD is working. If all else fails, unplug everything from the wall (STB,Denon, DVD player), wait about a minute, plug everything back in.
No sound from X1 box - Xfinity Community Forum
https://forums.xfinity.com/conversations/x1/no-sound-from-x1-box/602daeacc5375f08cdf234af
Installed new X1 box using HDMI. Good picture, NO sound. I disconnected the HDMI cable from the X1 box and plugged into my HDMI DVD player with movie playing -- Good picture, GOOD sound. This verifies my system is not the problem. Disconnected from DVD player and connected back into X1 box -- Good picture, NO sound. The fault is in the X1 box.
Does HDMI Carry Audio? How To Troubleshoot HDMI No …
https://www.minitool.com/news/hdmi-no-sound-or-audio.html
Two: set HDMI the default audio device. Press Win + R. Type mmsys.cpl and click OK. Make sure the Playback tab is selected. Choose Speaker/Headphone or Speakers and Headphones (make sure the HDMI cable is plugged in). Click on the Set Default button. Select the output device connected through HDMI. Click on the Set Default button.
Sound but no picture - Xfinity Community Forum
https://forums.xfinity.com/conversations/x1/sound-but-no-picture/602daf50c5375f08cd07ae92
There is a resolution some TVs and audio receivers has issues with. (1080p60) Take the Xfinity remote that you use with that X1 box and press “EXIT EXIT EXIT” (3 times fast) then type in on the Keypad “1080” that will change the picture resolution from 1080p60 to 1080i.
No sound from my TV via HDMI when my cable box is switched ...
https://forums.tomsguide.com/threads/no-sound-from-my-tv-via-hdmi-when-my-cable-box-is-switched-on-first.327995/
#1 I have a Comcast cable box connected to my Panasonic TV via HDMI cable. When I use the ALL ON button on the Comcast remote, it sequentially turns on my equipment, cable box first, then TV....
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