Rpi4 no HDMI Output

2 Brand new Rpi4 2GB - Little Bird Basic Kits with official PSU. Cant get the slightest hint of a signal on any monitor, tv etc (I’ve tried 3 TV’s and two monitors - all of which work with Rpi3). Only sign of life is a couple of flashes of ACT LED. Seems like device isn’t booting as its not getting any address on the LAN so cant even try and remote access it. Suggestions please?

same problem here. I have the 4gig version and one flash of green before nothing else.

Ended up flashing supplied card directly with a fresh Raspian and away it went - there must be an issue with the image on the cards being supplied