Brand new Sennheiser RS140 headphones stopped working

Hi Suzanne, I want to help you with your question, but I need more information from you.
If you step back and look at this problem, there are two to three things that immediately come to mind: 1) have you hooked your headphone input to an output of another device like an amplifier or tv or ...? 2) Are you certain that the headphones are charged and the power to the base station is good 3) pairing the headphones to the base may be an issue.
Please clarify some things and anything else you can think of. Chad

I’m happy to assist further over the phone at https://www.6ya.com/expert/chad_65e28e99f5372e81

I have got exactly the same problem with mine. Mine are RS140.
So if there is anybody that can help with this I would be very happy to find out what the problem is (as only used them twice)

Broken audio cable entering the transmitter or audio jack plug.

Power supply plug loose / faulty power supply.

The exact same thing happened to me, and I was using the same brand of headphones. :/ At first I thought it was just a **** brand, when my left headphone stopped working and sound would only reach it if I adjusted the base of the headphones - the bit that connects them to the iPod - a tiny fraction. I had to keep adjusting it to get it to work.
But it turned out that this is a problem that occurs in all brands of headphones. I went from Skull Candy to Sennheiser to Apple to Skull Candy again to Bose and no matter what brand it is, it will happen eventually. I don't think there is a solution, except to keep buying new ones and try taking them out of the iPod more gently and less frequently.

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.

You can buy the HDR 120 model which is basically the headphones lone
These will work with the base in conjunction with the set you have now.. or as a replacement
You can also buy replaceable ear cups for less than 20 dollars (check the Sennheiser website)
Finally you may want to replace the rechargeable batteries in the headphones you have
Just make sure you replace them with the exact type.. I believe those are NiMh AAA
Pop them out and go to any Battery Plus or Radio Shack.. a new set probably run you less than 7 bucks
My point.. for less than 30 dollars you can have your old headphones working and looking like new ones
Give the new batteries an overnight charge before using them

Good luck

Dance_to_it -
I have had these great headphones over 15 years (I think!)
1. Are the batteries getting a full 8 hour charge?
2. Have you tried all 3 channel options?
3. Is there anything else close by that is an RF transmitter or receiver? If so, move the headphone base or other RF instrument away from each other.
4. If these are the original batteries you probably need new ones.
5. When purchasing new batteries I recommend original equipment Sennheiser BA151 batteries, not any other brand. I have tried 3 or 4 other brands, all with less than satisfying results. I have no affiliation with Sennheiser corp., just a consumer of their products (and Grado's for wired headphones)
Good luck!
-KWS

Well it could be interference from the TV, computer, or other 900Mhz device (some wireless routers run on this frequency).

I'm currently dealing with the same issue myself, if I find a solution I'll post back.