Don't really know what happened as it worked fine yesterday but I turn it on and the green light comes on but not the blue one (I remember both should be on??). I don't get a picture at all - although the HDMI on my TV does pick up something it only shows a blank screen. 
Son says he heard a looooooong beeps yesterday.
Can't be the TV as I plugged in my HDMI camcorder into it and it works. I don't have another HDMI enabled TV to test them on.
Have switched HDMI cables etc and still nothing.
It's one of the 80gb backwards compatible ones with all the mem card slots and USBs so don't want a new one. Anyone know what it could be?
Also - anyone tried these guys before:

Son says he heard a looooooong beeps yesterday.
Can't be the TV as I plugged in my HDMI camcorder into it and it works. I don't have another HDMI enabled TV to test them on.
Have switched HDMI cables etc and still nothing.
It's one of the 80gb backwards compatible ones with all the mem card slots and USBs so don't want a new one. Anyone know what it could be?
Also - anyone tried these guys before:
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