Question about NoiseHush NS400 Bluetooth Stereo Headset - Black Original OEM NS400-11

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Red and blue light keeps blinking on my headphones

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What if my uproar wireless headphones are flashing red and blue ?


The headphones flash blue when u switch it on.If it flashes blue and red, it means that it is in bluetooth connection mode.So u can connect it with bluetooth devices by switching on bluetooth on your phone or pc.After connecting the red light stops flashing automatically and blue light starts blinking.Hope you understood. :)

May 04, 2016 | Audio Players & Recorders

1 Answer

My connector is frozen on blinking red and blue. It will not connect with the head phones and go solid blue.


Have you tried doing the same with the headphones? If you hold the power button down on both the transmitter and heaphones (get them both flashing red and blue), they might pair.

Jul 15, 2010 | Logitech FreePulse Wireless Consumer...

1 Answer

I have a wireless headphones the only number i can see is model f0461b on the trasmitter. The transmitter and headphone are not comunicating the lights are red not blue.How do i recalibrate them so they...


In rare cases, the FreePulse Headphones may loose synchronization with the receiver. If this occurs the following steps will re-establish the connection by putting both the headphones and the receiver in discoverable mode (actively searching for another bluetooth device it can connect to).
Putting the headphones in discoverable mode:
Press and hold the power button (located next to the charging port on the right earpiece) on the headphones. The LED on the button will go through three states in this order:
  • Blinking Red
  • Off (continue to hold. the LED will be off for several seconds)
  • Alternately blinking red and blue. (The headphones are now in discoverable mode and you can release the button at this point. The headphones will remain in this state for 30 seconds).
Putting the receiver in discoverable mode:
Press and hold the power button (located on the side of the receiver opposite the headphone jack).The LED on the button will go through three states in this order:
  • Blinking Red
  • Off (continue to hold. the LED will be off for several seconds)
  • Alternately blinking red and blue. (The reciever is now in discoverable mode and you can release the button at this point. The reciever will remain in this state for 30 seconds).
Re-establishing the connection:
To re-establish the connection between the headphones and the reciever, put the headphones and the receiver in discoverable mode at the same time. It will take a few seconds for the two devices to establish the connection. Once the connection has been established the LEDs on both the headphones and receiver will glow solid blue.

Nov 19, 2008 | Audio Players & Recorders

2 Answers

My logitech headphones dont turn on anymore.


Quote from LOGITECH official site:
In rare cases, the FreePulse Headphones may loose synchronization with the receiver. If this occurs the following steps will re-establish the connection by putting both the headphones and the receiver in discoverable mode (actively searching for another bluetooth device it can connect to).  
Putting the headphones in discoverable mode:
Press and hold the power button (located next to the charging port on the right earpiece) on the headphones. The LED on the button will go through three states in this order:
  • Blinking Red
  • Off (continue to hold. the LED will be off for several seconds)
  • Alternately blinking red and blue. (The headphones are now in discoverable mode and you can release the button at this point. The headphones will remain in this state for 30 seconds).
Putting the receiver in discoverable mode:
Press and hold the power button (located on the side of the receiver opposite the headphone jack).The LED on the button will go through three states in this order:
  • Blinking Red
  • Off (continue to hold. the LED will be off for several seconds)
  • Alternately blinking red and blue. (The reciever is now in discoverable mode and you can release the button at this point. The reciever will remain in this state for 30 seconds).
Re-establishing the connection:
To re-establish the connection between the headphones and the reciever, put the headphones and the receiver in discoverable mode at the same time. It will take a few seconds for the two devices to establish the connection. Once the connection has been established the LEDs on both the headphones and receiver will glow solid blue.

Do this and Freepulse will be pleased.

Aug 15, 2008 | Logitech FreePulse Wireless Consumer...

1 Answer

Defect headset


hold the transmitter button for about 50sec until it flashes blue/red quickly and connect the headset afterwards. Hope that helps. God bless.

May 30, 2008 | Logitech FreePulse Wireless Consumer...

1 Answer

Transmitter not turning off or reseting.


is this a blue tooth headphone..if yes...if it is, hold down the power button until the led rapidly flashes and then relase the button

Mar 19, 2008 | Logitech (980361-0403) Headphones

1 Answer

Free Pulse


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.
Once the headphones and the adapter are paired, it is not necessary to pair them again even if the batteries on both units are completely drained.
Additional Note: Repeated pairing will not improve the sound quality or give the headphones and the adapter a cleaner connection.

Mar 11, 2008 | Logitech FreePulse Wireless Consumer...

2 Answers

Logitech wireless headphones


Trying re-syncing the transmitter and the headphones. Hold down the power buttons on both until they alternate red and blue blinking, worked for me and now they work just fine. Got that from the Logitech FAQ website.

Feb 27, 2008 | Logitech (980361-0403) Headphones

1 Answer

Pairing s9 headphones w/krzr


OK I managed to get my head set to work. Make sure the unit is charged, press and hold both the 'ON' button (on neck piece) and the "PLAY/PAUSE' button on the right earpiece. Keep holding then the LED should flash Blue three times THEN flash alternate RED and BLUE. You should then be able to Pair the Device. Good luck

Oct 21, 2007 | Motorola Radio Communications

1 Answer

No sound


hold both buttons until they blink blue and red. will take around 20 or 30 seconds of holding. When they both blink red and blue, they will sync.

Jul 22, 2007 | Logitech FreePulse Wireless Consumer...

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