20 Most Recent Sennheiser HDR 120 Consumer Headphones Questions & Answers

Can you remove the rechargible batteries ? To try and reset them ? Or maybe replace them ? It sounds like the batteries have gone bad and not charging

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Bad connections. Plug in and withdraw multiple times, It may serve to "clean" and polish the contacts. Hope it works.

You plug the charger base in the AUDIO OUT of the TV, not the headphones. You wear the headphones. You use the volume dial to lower or increase the volume. And don't forget to plug the base in a power outlet and turn on the headphones.

I have a set as well but the batteries were weak and it was doing the same thing when they were new. Replaced with good batteries and that was the problem. if you try this and they still don't work then just return it for a replacement