[JoseD]

This seems to be a thing that, although cheap, few have tried on their high end CRTS. I've found that my Toshiba 36ZP48 accepts 1080i and various other very usefull frequencies like 75Hz at 833i, which seems to be the best one for it.
Now this is through the component input which the sony doesn't have, but the Sony's tube is actually the same tube used on HD sets on the US and has the highest pitch ever, I've seen one yesterday.
So the question is, since the internal circuitry on the Toshiba is able to apparently bypass some processing and accept the signal directly when feed an HD signal, maybe the Sony can do the same. This is not documented in the manual but it works (picture needs some adjustments though...).
Instead of using a VGA to component transcoder what is probably needed is an adapter from VGA RGB to Scart RGB. I'm not on par with the various possibilities here, but it must be something that doesn't do any processing on the picture. There might be a few problems with the sync signals though, the best is probably something that includes timings but I'm not on par with every possibility (is there anything that includes timing signals with only 3 RGB connectors ?).
After that is solved, using PowerStrip you'll need to test a bunch of signals and tweak the fequencies and see how the TV responds, if 1080i works it would be an interesting find.

I'd be interested in the results, anyone brave enouph to test it ?

Cheers
José

[JoseD]

Found it!
The Nexus: Projects - VGA to SCART Converter
They seem to aim it at SD video resolutions but that's because TV's with RGB inputs accepting HD are unheard of.

Here's another circuit that does the same thing (translated from Greek apparently...)
VGA to TV Scart


There must be some pre made circuits / adapters available too, one just have to be patient to find them, but we need volunteers to test 1st !

[JoseD]

Here is another circuit in proper english
VGA to TV converter