I figured I would re-visit this as I finally found a solution;
The biggest issue is largely limited to modern Sony TVs or at least the two I was attempting to use.
My assumption was that the 1080p TVs simply would not display the signal, clearly that was wrong.
I have found that a modern 60" LED Samsung will display older generation consoles without issue;
The problem is the TV will often try and make the image wide screen which of course messes up the look of the game, you also have some pretty hard grain issues on the modern TVs, coupled with the slight lag that I have found on games that require more precise timing (I found Street Fighter II to be particularly challenging)
These are the solutions I found to those issues:
1) Wide Screen:
On the Samsung at least I was able to force the TV to display based on the outbound signal, but ONLY after it had been upconverted (See 2) once this was clean everything presented on the screen as it was suppose to.
2) Grainy Mario:
This:
www.amazon.com/gp/product/B015MSBNZA/ref=s9_acsd_hps_bw_c_x_4_wConnected to
This:
www.amazon.com/gp/product/B0154QWCM8/ref=s9_acsd_hps_bw_c_x_5_w?th=1Allowed me to up-convert the signal, one of the more interesting models converted my PAL to a playable format.
I used one up convertor per 8 to 1 box and set the older consoles to 720p and the more modern (Saturn and on) to 1080p
The SNES up-converted to 1080p looked great in still form but the moment there was motion it wasn't pretty hence the choice to go 720p;
Basically all 4th Generation Consoles = 720p
And 5th (and some 6th Generation Consoles) = 1080p
Something like the Neo Geo which I assumed would be able to go 1080p much to my surprised performed better at the lower resolution;
Anything Generation wise beyond that which had at least 480p Resolution or better had its own input and no up-conversion;
3rd Generation and Lower Consoles went in via Coax and even the ones that I could force into RCA were not better for the up-conversion;
The 1st Generation stuff may require you mess around with display settings.
3) Whats with the Delay?
For some reason there was a delay, it was slight but for some games it made a difference (Usually Fighting Games)
After doing my digging online it was something about the signal which made the picture quality better on the new TVs, given that I didn't much care for the picture quality there was a simple work around.
Many TVs have "Game Mode" some are easy to find (Panasonic) some less so (Samsung) but it basically decreases the picture quality (which is actually a good thing for most of these consoles) and eliminates most of the lag.
The Newer the TV seemingly the worse the lag.
