Mac mini 2014 FLICKERING :(

Hello
Hello i have mac mini 2014
its connected to the samsung smart tv by hdmi (i tested 2 of them)
When mac boots up on the screen i saw multiple artifacts (artifacts similar to analog tv)
When osx power off screen the problem also persists
I see artifacts alternating with a black screen and after some time the image appears
while booting I can not see anything beyond the artifacts (I can not choose between osx and windows)
if anyone had a similar problem?
http://osxdaily.com/2014/01/04/fix-flickering-screen-external-display-mac/
how to fix? i cannot use my mac

i see lots of people have this problem (flickering, no hdmi signal, loong boot) its the same problem i think
Anyone from Apple know this?
Bad drivers is my idea
btw warranty on my country its bad idea

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