I have Logitech wireless headphones for my Ipod, and I can't get them to work. When I press the on button on both pieces, it goes solid red and not 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.

You hold the button on the transmitter for about 50 seconds - light flashes red, solid red, goes off and then flashes blue and red. Then you can do the same on the headphones. Then wait and they should pair.

Try un-pairing it from any other device and turn off bluetooth on any mobilefone in bletooth range. Then start discovery on ipod again.

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.

just hold the button down until it begins to flash red. when u power on the headset it should flash red/blue then both will turn solid blue when they are synced. Hope this helps.

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.

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.

Figure 2
3. Once the headphones LED is flashing red/blue, press and hold the power button on the wireless adapter. See Figure 3.

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.

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.

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.

Figure 6
When the adapter is paired the LED will be solid blue. See Figure 7.

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.

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.

i researched the logitech website and found the solution.
you must turn both parts on, but instead of letting go after 3 seconds, you keep holding until the lights start flashing red and blue on both pieces. Once BOTH pieces flash ONLY BLUE they have re-paired themselves, and they should work fine now.
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

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.

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