My second iMac Pro has just died! With exactly the same problem as my first. Has anyone else experienced the same issue? Everything works fine and performs great for a few weeks, the first iMac Pro around 5 weeks the second 2 weeks. One day the iMac is powered on and nothing happens, the screen is dead, no apple logo, no OS. I have tried to reset the smc, boot up in safe mode etc. But nothing. The Mac is hooked up to 2 LG ultra fine 5k displays via thunderbolt 3, a Lacie 6big raid via Thunderbolt 3 and a belkin thunderbolt 2 express dock HD using an official apple thunderbolt 3 to 2 adaptor. When turned on the drives hooked up cycle and make a noise but the iMac screen does nothing. The LG displays do nothing. The same setup works fine with my 2017 15 MacBook Pro. Does anyone have any ideas/help? Apple solution is just to provide me with a new Mac with a 3-5 week delay but never fully diagnose the problem.