Greetings to all.
Can anyone help?
One of the boards is zombie.
When this indication diodes occurs in a strange way. They light up together and faded out in a second. When connected to cgminer - zombie. The power supply is blinking yellow led.
I would appreciate any useful information.
Have you attempted swapping the power supplies? Orange light means either an AC issue (problem with power supply itself) or DC issue (usually a short in the board). Read back a couple pages for my posts on this. I provide instructions for how to handle both scenarios. In your case because the board lights up it's probably an AC issue which means you need to replace the faulting power supply.