Thanks for the tips!
Solved the main issue. I connected the board up to the ‘System Console’ in Quartus Prime.
The debug output (I built a debug version on ubunutu) said ‘Can’t read THS7353’
Checked the pins and the 3 voltage pins were not soldered enough to carry more than 2.7v
Fixed them up and BINGO booted up showing firmware version.
Plugged in a neo geo and pressed btn2 it detects the signal – showing a sync with no red light but there is no HDMI out – tried 2 Tv’s. Green led is also not lit but I think that’s just a fried led.
Also chunghop remote doesn’t register.