I have Sennheiser TR 110 headphones. They are connected to Audio Output port in the back of my Samsung TV. I can hear sound as seen on the screen for Netflix movies but when I change to Cable Network chanels, I can not hear any sound on my headphones inspite of diligent tuning effort.Any help will be appreciated.

SOURCE: unable to listen to my wireless

They need a minimum level of signal to switch on the transmitter.
Verify if it works on yet another system.
Make sure you have the right output on your Samsung.
Try to increase the output level of your Samsung...(up the volume, but it may be a fixed output..)

SOURCE: Sennheiser rs-126 connection

Yes, you may. RCA connections are universal, just don't connect an input lead to an output jack: you might damage the jack.

SOURCE: RS120 Can still hear TV when headphones are on

Ok.. first.. the simple thing is to go into your television menu and turn the television speaker OFF.
Then exit the menu and turn the volume up.. try your headphones now.

Next.. check the back of the TV for a FIXED AUDIO OUT.. plut your headphones into these outputs.. if you have these.. you can simply turn the set down.. and use the volume control on the headphones.

SOURCE: audio from tv is not restored by turning off power on headphones

It sounds as if you are plugging the base into a standard headphone jack located on the Television set.

RCA Headphone jacks (incl mini) automatically stop the sound output to the main speakers on almost every set I have seen.. or home stereo.. etc etc

In other words you can take a standard RCA jack.. with nothing connected to it.. plug it in while the music or sound is coming out the main speaker.. and it will cut off the output to those speakers..

If you set has audio outputs on the back.. preferably Fixed Audio Out .. you will need to connect your base unit to those.. turn your set volume to 0 and adjust the headset volume using the control on the right ear-cup.

If you have variable audio out.. you will need to go into your TV sets setup menu.. turn off the speaker.. and turn up the set until you achieve a signal and decent volume through the headset.

If you are missing these connections.. your current “work around” is your only solution.

Best of luck

SOURCE: Sennheiser Hd 205 headphones stopped working properly

Although I'm not an expert I'm not quite sure if armadillopic is right. I had the exact same problem and managed to overcome it by replacing the cable from the headphone to the mini-jack plug. I actually only had to renew the last bit of the cable but chose to replace the entire cable. I found out that when I bend the last part of the cable in the exact right position the strange high pitched sound that was going over the vocals went away and the vocals became much louder and clearer like they normally did. Perhaps you can try if this works for you as well? Just bend the last end of the cable in various kinds of positions (NOT TO EXTREME OR YOU WILL ONLY DAMAGE THE CABLE MORE!). Hope you are able to narrow down the problem to just the cable. Greetings!