I dont know if its related but my z590 FTW failed.  the post code led display was completely non functional and the fans spun up to 100%.  Customer service was pretty bad on this and actually denied my RMA initially.  I cant believe I'm saying this but I think I'm going to go with asus and an extended warranty through best buy moving forward.  Here is a link to what happened with my Z590 FTW.
 
Z590 FTW Motherboard failure and customer support experience - EVGA Forums

Frustrating and disappointing as hell.
 
I now firmly believe this failure is factory standard

All along I assumed the led readout was defective or over driven with voltage or current.
I have since learned that with my board that is not the case.
 
Even now, it's a cool morning where I am, the cpu temp is 29c. The digits are nice and bright like they were brand new.
But whenever any other digit is displayed in the left digit position whether its a number or a letter (during post) then all segments of the left digit go very dim with the bottom right segment totally gone.
 
My conclusion is that whatever is driving the display is the problem. Maybe this will help EVGA, if they even care.
They may not since they never responded.
I'm thinking about buying the z690 Classified but researching whether they have the same problem.

B0baganoosh
I haven't seen any z690 reports with this problem, just FYI.

Thank you for that info! That's a relief.
That readout pisses me off every time I look at it.