Hissing and poor sound quality

You need to Adjust the accompanying sound system.

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I would return them and either get a new one from them or another manufacturer.

Seems all flat panel TV's have bad sound mainly because there isn't room to put decent sized speakers in them, you can use the audio output RCA jacks to hook an external amp if you would like

It's likely the groud connection in the cable is broken. Possibly at the plug, it would mean no centre focus and no bass as the headphones get only out of phase sounds. I'm guessing you've tried them in another device - a faulty sockey would do the same.

Mine is a bit older (2yrs), but I have exactly the same problem. Absolutely no sound from the headphones (no beeps). I also tried new batteries, but still nothing.

If you have a solution, let me know!

Tanks

I'm having the same problem with the RS140. Only a few weeks old, and no sound at all coming out (not even the beeps). Have replaced batteries and tried a different audio source. Base station lights are on and indicating it is receiving an audio signal, but nothing is going go the headphones.

I suffer from hearing loss badly. I've had three different Sennheiser headphones over the years so I can listen to the TV at a level good for me without it blasting for the rest of the House. The ones I have currently are HDR 170 they are AWESOME! Can adjust bass treble as well as volume up and down but they are very comfortable over the ear headphones. Their best feature is the way they sound. Man you won't be disappointed especially listening to music through these. They're great! Cordless, rechargeable, long playing too. I get about a good 12 hrs out of a chargecould get more but want them for the night. Hope this helped. Go to a store that sells them if you can maybe Best Buy etc. try em out. Then shop for cheapest price as they're not cheap.

sounds like high voltage arcing,caution

Go into the TV Menu and access the sound settings, for the UK it would normally be set to I. This MAY need to be changed to a different setting. Try the options that are listed. Might fix it!!