BT Board not showing up for pairing

Hi all,

I have been working with a couple of BT boards for the last couple of weeks, yesterday I removed all the paired devices on my machine (macbook pro running osx 10.4.9) to start over and test my setup for installation with another machine. One of the BT boards is not showing up for pairing anymore, it powers up but it is not discoverable anymore... I have tried to pair it with other 2 machines and it doesn't work either...

has anyone had a similar experience? do you have any suggestions of what might be happening?

many thanks,