blinking black screen on my XBOX ONE S

I try the procedure when the screen is black at the start. I pushed xbox and eject buttons during a long moment, the console started, I heard a sound after 10 seconds but the Xbox button didn't blink. Of course, the screen is still black. Just for info,
when I connect my second console (Xbox One S), it works without any issue (same cables, same tv input).

I bought my Xbox One S in December 2018 and currently i'm experiencing 2nd black screen in a few months.

I got first black screen in January 2019 and got my xbox fixed by Microsoft. Now in June 2019 i got 2nd black screen. So frustrated!

I'm curious what did they fix? What is causing black screens? I'm also playing my games on external hard drive to not strain the internal hard drive but black screen keeps happening.

I've tried troubleshooting steps (except the usb update cause i don't remember my dashboard version and i still have black screen) so i'm confused nothing works.

I'm thinking if it gets fixed for a 2nd time i'm going to sell my Xbox One S and buy an Xbox One X so maybe i would have better luck with different hardware. I really don't know... my white Xbox 360 Pro is still alive and never got red ring of death and
Xbox One S keeps breaking with black screens. I'm lucky with Xbox 360 but so unlucky with Xbox One S. I'm so disappointed with Microsoft hardware.

well black screen happened to me twice, but these times were different... it kept on blinking black screen and going in and out of black screen every ten seconds... eventually kicking EVERYONE out of a middle of a game...

GoonerBri: that is very unfortunate, hopefully the replacement sorts things out for you!

Having this issue with a 4k tv and my xboxone. It usually fixes itself if I do a hard reset/power cycle. But, the problem comes back about once or twice a month.

Also, where is support on this? Hello...xbox support team. We have a 5 year old unresolved issue here.