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The Sennheiser RS 120 is an RF wireless headphone system with open, supra-aural headphones.

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One headphone does not work

I only listen to the tv in mono with one headphone, not in stereo with both headphones. I already checked the electrical connection between both headphones. I changed also the battery, but still the same. Any idea what is wrong and how to fix it will be higly appreciated. Thanks

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Hi,

Have you plugged the headphones base station into another audio device (even a mobile phone to listen to music) to prove that the stereo is / is not working? It may be that the TV is not giving a stereo output, if so check if the TV has Volume 'balance' controls in its' audio settings, maybe 1 (L or R) channel is turned down. Have you tried a different stereo audio cable to connect between the TV and the headphones base station?

par

Thanks for your ideas jayeff! I plugged the base station to a stereo radio set and it also failed. I plugged other headphones to tv set and the stero signal was there. So I'll pick up a different stereo cable to test it again.

par

Hi,

If it still doesn't work with a new stereo audio cable it could be either a faulty stereo socket, a wiring fault or a audio channel path fault in the base unit. in any event the base unit would have to be opened to be inspected and tested.

par

I am having the same problem! Still not found any solution yet!

par

The same problem: one headphone does not work. Remains in mono mode even when I connect to another device. Mono speaker is perfect. The other speaker gives very very low voice volume. Will cleaning the balance knob with isopropanol help?

par

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Spray contact cleaner onto volume control and run volume control back and forth several times, which should fix your problem.

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I spread it onto the volume control ... without good result. Anyway thanks a lot for your advice. I fixed an old radio using your trick.

par

Thanks a lot! It worked for my old Sennheiser which I thought was waste already.

par

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In my experience, with cheap to mid-range headphones, the loss of sound in one ear almost always is the result of bad connection where the cable is joined to the plug. This is especially the case with headphones that stick straight out from the jack as opposed the ones that make a right angle.

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i basically have tried everything possible new connection lead eg phono leads combined with input lead for audio cable on base unit plugged into tv via audio jacks red and white jack sockets true connection there but green transmitter light keeps going off when i bang bottom of base unit comes back on after several attempts but only stays on for short period of time before going off again when green light is on tried to tune in on all channels on base unit but not getting anything only tuning noise and loud static discharge noise charged batteries fully for 18 hrs as required still no joy any ideas pls as to how to tune my rs 120 wireless headset to tv in this case what could be possible problem as to why cant tune headset to my tv any help appreciated ty william in stoke on trent

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