Originally Posted by voxmagna
Tip of last resort: Hit reset to factory defaults. After that if it doesn't work I'd guess something's wrong hardware wise - a device or a ribbon cable problem (does the external hot shoe trigger work?). Or have you got a mixed flash mode set and there's enough available light not to need flash? VOX
Here I am again.
Tenx 4 all the answers. I've checked everything and... NO LUCK. But then again, once last week I just took my camera in my hands, opened flash and there it was, working fine again...
...but tough luck, it went "dead" again (and right on time when I really need it
There must be a hardware failure. I'll visit my dealer and then we'll see.