Sennheiser Audio Players & Recorders - Page 3 - Recent Questions, Troubleshooting & Support

Suggest take earphones to Hi-Fi store and try them there. If still same problem, elements are shot. If not, your equipment has issues.

no two different systems

Contact your local service center directly or online here: https://en-us.sennheiser.com/service-support-contact-center

Hi. Could be TV settings for the external audio if you're going that route. Could be the sound format too - you can identify the audio codecs used with gpot and look for a common thread - http://www.headbands.com/gspot

Broken audio cable entering the transmitter or audio jack plug. Power supply plug loose / faulty power supply.

A late answer but it could be intererence, has anything changed recently? https://sennheiserusa.happyfox.com/kb/article/219-what-do-i-do-when-there-is-wireless-signal-or-wifi-interference

Hi. I would check the batteries first - then I'd move the whole lot to a different room, they may be being swamped by a nearby signal from a modem or similar nearby. Good luck. https://sennheiserusa.happyfox.com/kb/article/219-what-do-i-do-when-there-is-wireless-signal-or-wifi-interference

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.

Any foreign bodies inside the driver bay, or something magnetic? Just a thought. Unless they've beed damaged though being overdriven

Is there an attenuator on the back of the transmitter? Set that to 0db might help.

Sounds like you need a new cable, the common ground connector is likely broken (open circuit). Often gives a sound like being underwater :-)

Hi. What is the exact model of Headphones you have? If you have corroded alkaline batteries then you may have the wrong battery type and could need NiMh batteries perhaps? I'm guessing there's a headphone dock or cable that's tying to charge them, you don't charge alkaline batteries.