Question about Sennheiser HDR 120 Consumer Headphones

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No sound, only static

The on/ off green light is not lit.  We have checked the connections and the batteries.  We had good sound, but now all we get is static.

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Re: no sound, only static

Hi I had the same problem and just emailed Sennheiser.Go to the menu on your TV and change the variable audio output to fixed. I use the headphones through the home theatre so the volume must be max on the home theatre and then you can adjust your headphone volume. It absolutely worked and I don't get anywhere near the static noise when I go to another room with the headphones on that I got previously. Also be sure your audio cable is plugged into the fixed audio output socket. I did not have to do anything with that.

Posted on Feb 20, 2009

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Re: no sound, only static

My mother's headphones have worked great until recently. after a visit from some of her grandchildren, they no longer work on the television in her family room where she always used them. i took them to the living room and was able to get them working on that tv, but still no luck on the other tv. any suggestions?

Posted on Aug 13, 2010

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Re: no sound, only static

I had the same problem. I guess someone had bumped the channel switch. As soon as I changed the channel on the base of the transmitter, the on/off light worked and the headphones worked fine.

Posted on Jan 03, 2010

Re: no sound, only static

I had no green light, just static etc.

If you have any other wireless equipment nearby it could be worth moving the headphone base station. In my case wireless router and dect phone were close. I moved the base and immediately the headphones started working again.

Posted on Feb 28, 2008

Re: no sound, only static

I have changed batteries to higher spec and seems to have solved problem ,something to do with amps ...

Posted on Jan 26, 2008

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After working correctly for months, my wireless headphone stopped transmitting anything -- not even static

It could be that the rechargeable battery has failed. Take the batteries out and then replace them. Perhaps this may help you:

Go to this site and it will automatically download the PDF file to your computer. Takes about 3 minutes. Go to Start> Documents> Downloads to find the PDF file RS170_US_INT.

Feb 05, 2015 | Sennheiser Headphones

1 Answer

There is a 'green' light, but no sound in the earphones, volume does nothing?

check the input to the base unit,and check the volume control on the headset..also put new batteries in the headset.Mine are a rechargeable type and are useless.BUT dont put headset back on charging stand with ordinary batteries in

Aug 12, 2014 | Headphones

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Work fine for about 5 minutes than change to static

There's an auto-shutoff feature which kicks in when the audio input to the transmitter is too low. That's usually indicated by the green light on the transmitter turning off. Just increase the volume on the device connected to the transmitter, and you should see the green light come back on. As long as that's on, it'll stay transmitting and shouldn't just cut out to static.

Jun 25, 2014 | Sennheiser RS 120 Consumer Headphones

2 Answers

Sennheiser headphone static

you might check to make sure that your gain isnt to high many times this can negatively effect your sound quality

Mar 25, 2013 | Sennheiser Headphones

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I have a huge problem with these headphones (the Sennheiser HDR 120)... and my wife bought two of them... They have great sound on the computer, but once the green light turns off on the base? There...

The volume of the sound source (Mac) must be sufficient, otherwise the transmitter automatically turns off. Turn up the volume on the Mac, and turn down the volume on the headphones. There is no way to disable the Automatic On/Off function of the transmitter.

Aug 12, 2011 | Sennheiser RS 120 Consumer Headphones

1 Answer

My Sennheiser RS 110 headphones won't work. I followed the installation directions but all I get is static. What else can I do?

First thing is you need to have a signal going to the headphones for them to work.

If you are getting a signal the green light should be lit.

If only the red lamp is lit the headphones are not getting a signal.

If hooked into a television you should have them plugged into a Fixed Output not variable output..

If you only have a variable output then you must turn the speakers off on the television and then turn the volume up on the TV in order to send a signal to the headphones.

If you are using a amplifier make sure you are using the correct output. Tape Monitors generally will not work as this output is not amplified.

Lastly try using an rca to headphone adapter and plug them into a headphone jack.


Jan 02, 2011 | Sennheiser RS 120 Consumer Headphones

1 Answer

There is constant static in the left ear when the noise cancelling is turned on. The only way to solve this is to turn the noise cancelling feature off. Is there another solution?

these things are suppost to have a little static noise when on. next time get noise reduction headphones. they are like headphone style ear protection like what construction workers use. but only more stylish and they contain speakers. and no killing batteries for good sound. they are regular headphones but with really good sound isolation

Oct 25, 2010 | JVC HA-NC250 Headphones

1 Answer

No green On/Off light. Charge light is red. I hear only static.

Two things.. Check the batteries..
Also.. since these headphones have to have a signal sent to them to activate transmission (green light simply indicates they are receiving a signal) it can take a few moments after the signal begins to activate them.
I would hazard a guess that when you unplug the cables and then plug them back in.. the feedback that generates activates the base much the same as a regular audio signal would
Finally.. make sure the source is a fixed output.. if not.. and its will have to increase the output or volume to activate the base..

Good luck!

Jan 26, 2009 | Sennheiser RS 120 Consumer Headphones

2 Answers

There in no green light on RS 120. There is a red light on indicating that the headphone is being charged. Why I cannot use non-chargeable AAA batteries?

The green light only comes on when it is receiving an audio signal.

Standard batteries will work.. if you NEVER use the charging station.. and plan on replacing them every x number of hours used.. IMPORTANT.. if you forget.. and place the headset on the charging station with standard batteries.. they will probably rupture.. and may well ruin the headset..

If you decide to replace the chargable batteries.. make sure you replace them with the right size and type..

Jan 08, 2009 | Sennheiser RS 120 Consumer Headphones

1 Answer

On/Off not lit when plugged in

There is help for this in the user manual. Possible solutions I would try:

1. Make sure your source sound (TV, amp etc) is up high enough - if the sound is too low the headphones won't detect a signal.

2. Try changing the channel (the switch on the bottom left of the cradle base) and pressing the "Tune" button on your headphones. Try all three positions, pressing "Tune" at least 3 times in each position.

3. Take out batteries & turn off base, leave for 30 secs, reassamble and try step 2 again.

Should all work ok. I've been using mine for over a year and they're great!

Feb 06, 2008 | Sennheiser HDR 130 Consumer Headphones

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