Sennheiser MM 550 Wireless Headphones Logo
Posted on Jun 19, 2012
Answered by a Fixya Expert

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Flashing blue light

I am using this headphone since a while. But I have a problem. Around the center button, a blue light always keeps flashing.. Once I switch on the headphones, it keeps flashing forever, does not matter if I am on a call or listening to music or not doing anything. Initially it was not like that, one day I pressed some buttons on it, I dont remember in which order I pressed, but since then this blue flashing light has started, never ends unless I switch off the headphone. I am not able to switch it off. 2 of my friends have the same headphones, but they do not have this issue. The headphone is working fine otherwise, but after paying that money, I am sad that it has this problem. It id disturbing for the co passenger when I am traveling in the night in flight or train

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Anonymous

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  • Posted on Mar 20, 2013
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1. turn it off2. hold centre button until blinking blue and red3. briefly press volume down4. turn it off= fixed :)
From Sennheiser UK:http://www.sennheiser.co.uk/uk/home_en.nsf/root/contact_menu_technical-question_telephone_headsets_faqs_mm400_series_bluelight

  • Kristian
    Kristian Jan 10, 2014

    Thank you, your steps worked for me. I have been 'dealing' with it for years.

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  • Posted on Jan 11, 2017
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  • Advanced Technology,The buletooth headphone ensure clear speech within 10 meters and high-fidelity stereo music .
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  • Posted on Aug 25, 2012
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I have been having the same problem and was completely unable to stop it. While searching for a solution today I tried everything but eventually connected to my iPhone via Bluetooth, which stopped the flashing, and then clicked <Forget this device> on the iPhone and the flashing did not return. In the past 20 minutes I have connected to my Mac, my iPhone, wired and via Bluetooth and the problem seems to have disappeared (I hope).

5 Related Answers

Grubhead

Grubhead

  • 5755 Answers
  • Posted on Nov 10, 2009

SOURCE: The right headphone is not playing music

Most faults in headphones are caused by either a broken cable or a faulty plug. Try moving the cable or plug around in various places to see if it come back on, look for wear or a break too! If you find it you will have to replace the plug or cable. The only other cause is a faulty speaker, but they are not common.

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Anonymous

  • 2 Answers
  • Posted on Jan 21, 2008

SOURCE: Sennheiser RS 130 Wireless Surround Sound Headphones

Did you try to remove the batteries and at the same time unplug the power of the base for 30 sec ?

Anonymous

  • 3 Answers
  • Posted on Mar 08, 2008

SOURCE: unable to listen to my wireless

They need a minimum level of signal to switch on the transmitter.
Verify if it works on yet another system.
Make sure you have the right output on your Samsung.
Try to increase the output level of your Samsung...(up the volume, but it may be a fixed output..)

Grubhead

Grubhead

  • 5755 Answers
  • Posted on Apr 02, 2010

SOURCE: sound in one headphone keeps going off

You have a break in the cable. You don't say in what area it's in, so I will have to give you 3 ways of clearing the fault.
1: Break in, near or around the plug. The best solution is to cut off the plug making certain the break area goes with it. You can then fit a new 3.5mm plug. If you need advice on how to do this let me know.
2. Break halfway to 2-thirds along the cable. Again cut the cable to a point clear of the break, again fit a new plug. To extend it you can purchase an extension headphone cable from any hi-fi shop.
3. Break to close to headset. In which case you will need to replace the entire lead. To do this you need to open up the headphones. Access is obtained by removing the pad(s) and any foam. You might need to force the foam off. You can glue it back on afterwards. You should then see screws to open it.
Fitting new plugs or attaching the wire inside will require the use of a small soldering iron.

Anonymous

  • 1 Answer
  • Posted on May 05, 2010

SOURCE: The headphone does not turn on anymore

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)

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The following procedure will re-establish the communication link between the Headphones and the Wireless adapter, this is called "pairing". Before you start please make sure both the headphones and the wireless adapter are fully charged and turned off.
Note: The headphones and the wireless adapter come pre-paired from the factory.
1. Press and hold the power button on the headphones. See Figure 1.
headphone.jpg
Figure 1

2. Continue to hold the button down until the LED starts flashing red/blue in an alternating pattern. Release the button when the LED starts flashing red/blue. See Figure 2.
headphone-flash.gif
Figure 2
3. Once the headphones LED is flashing red/blue, press and hold the power button on the wireless adapter. See Figure 3.
receiver.jpg
Figure 3
4. Hold down the button until the LED starts flashing red/blue in an alternating patter. The LED will blink blue, then turn off for a few seconds then blink red/blue. Release the button when the LED starts flashing red/blue. See Figure 4.
receiver-flash.gif
Figure 4
5. Once both the headphones LED and the adapter LED is blinking red/blue, press the volume up button once on the headphones. See Figure 5.
headphone-volumeup.jpg
Figure 5
Once the headphones is paired with the adapter, the LED on the headphones will blink blue once every two seconds. See Figure 6.
headphone-flash2.gif
Figure 6
When the adapter is paired the LED will be solid blue. See Figure 7.
receiversolid.jpg
Figure 7
The adapter may continue to blink red/blue for a few seconds even after the headphones LED starting blinking blue. This is normal; the adapter may take a few additional seconds before the LED turn solid blue.
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Additional Note: Repeated pairing will not improve the sound quality or give the headphones and the adapter a cleaner connection.
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http://logitech-en-amr.custhelp.com/cgi-bin/logitech_en_amr.cfg/php/enduser/fattach_get.php?p_sid=kPXUPeRi&p_li=&p_accessibility=0&p_redirect=&p_tbl=9&p_id=2883&p_created=1125080596&p_olh=0
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Thank you SO much , i know this is old, but i recently had mine repaired and i thought i'd have to do it again but you saved me a weeks worth of stress, and renewed my faith in logitech, as if i EVER doubted them <3333
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