Xbox One X HDMI No signal

I’ve seen the video, but I’m unsure what the problem is and what I need to replace. Basically my Xbox one x was intermittently showing no signal until it permanently showed no signal but I could do the graphic reset and it’d turn back on. However, that no longer works and now it doesn’t show signal at all, what do I need to replace?

(I have a video of what it was doing but it won’t let me attach it)

Most of the time that sort of problem is caused but a faulty retimer chip

Thanks, how much you think I want to be paying to get this fixed?

Around $100-$120 is a good price for this repair.