Well it seems I'm having a couple of days of stupidity...because I appear to have damaged one of my EZB v4.
I was connecting the UART cable to an Arduino and stupidly connected it with the power on....
Im not sure, but I may also have connected it the wrong way round....
SO....having possibly put 5 or 6v into the wrong place....the EZB does not fire up...and when plugged in, prevents the arduino and other EZB from working in the same circuit.
Is there any way that I can repair this or am I screwed?
Thanks for your sympathy!