Trying to FIX a Faulty Xbox One S stuck in 480P

Hi, this 'trying to fix' video shows me attempting to fix a Xbox One S console which only displays in 480p. Unfortunately 720p, 1080p and 4K is not working. This was purchased from eBay for £96 UK ($125 US).
These 2 videos helped me out tremendously.
Andrew Paul -    • XBOX One S Black Screen: How-to repla...  
TronicsFix -    • Xbox One S Teardown - Detailed Disass...  
Apologies for the spelling mistake in the title, I didn't want to upload it again for a missing 'a' in purchasing :-)
Remember that this is just for entertainment and I am not an expert in these repairs. The processes in the video may not be the best way, the correct way or the safest way to fix these things.
I do love fault finding and trying to fix broken things so I hope that comes across in this 'Trying to FIX' series.
Many thanks, Vince.