Live tv blinks on replaced xbox one

Can try but I think is not that. Other people did a console replacement with the same result. I think is because the HDMI signal for certain TV models. I have seen the same with a blu-ray player on a OKI TV, 1080p it blinks sometimes, 720p is fine.

Maybe it could be some lack of sync between X1 and TV via HDMI in some cases, as 1080p requires more transfer bandwidth.

But, if in the same TV other devices doesn't blink, then is not a TV failure, it could be a failure in communication between specific device and TV via HDMI.

Just replaced the standard xbox one cable with a slightly better one & the picture is remarkably better both on blu-ray & live tv.

Hey there!

Try unplugging the power brick from the console and the wall for about 10 seconds, then plug it back into the wall but not the xbox, if the light is blinking or off you may have to get a replacement,if it is on firmly plug it into the console thennnnnn if
it is blinking or off you may need to replace the power brick, if the light is still on your xbox should be working! If you need additional info visit this website.

https://support.xbox.com/en-US/xbox-one/console/reset-power-supply-solution

Can you shoot a video of the blinking and flashing with your smartphone, and do a YouTube link to that video or something like that? Just so we can understand what exactly you mean by blinking.

Does the picture go out completely, or is the brightness going up and down, or is actual 3D geometry blinking and jumping around?

It sounds like it could be a faulty port on the TV. Try to call the manufacturer and see if they have a problem with it.