The Zenith ZT-1 is kicking my butt and I'm running out of ideas.

I'm back on the dead Zenith ZT-1 and it's time to go through my list of faults and try to figure out what is broken. (Again!) Part 1:    • The Zenith ZT-1 tried to be a low cost gat...   Part 2:    • The Zenith ZT-1 alive. Sort of.   Part 3: This part! Part 4:    • I finally fixed the Zenith ZT-1!   0:00 Intro 1:46 RGB2HDMI and glitching video 17:30 Analyzing how the 8275 actually works 40:28 Time to break out the logic analyzer (again) -- Links Dumps of the ROMs and other info on Github: https://github.com/misterblack1/zenit... Additional photos: https://terminals-wiki.org/wiki/index... Intel 80xx MCU datasheet: https://www.keil.com/dd/docs/datashts... Intel 8275 Datasheet: https://www.jameco.com/Jameco/Product... Adrian's Digital Basement ][ (Second Channel)    / @adriansdigitalbasement2   Support the channel on Patreon:   / adriansdigitalbasement   My GitHub repository: https://github.com/misterblack1?tab=r... --- Instructional videos My video on chip removal without damage:    • How to remove chips without damaging the c...   --- Music Intro music and other tracks by: Nathan Divino @itsnathandivino