MegaDrive 1 CXA1645 mod

i made rgb amp for my clone but the white color seems like a yellow. any ideas?

 

I do own a 32x, a mega drive 1 ( va5/va6) and multi mega, RGB scart leads for all.

as far as i can tell, md1 > 32x = Jailbars on blue,green too, maybe red
Md1 with c28 removed (and almost jailbar free on it's own) >32x = same as above.
Multi Mega on it's own or with 32x = same as above

It could be my MD2/multimega RGB cable causing the issue, but i've used far cheaper looking even (even ribbon cable) on my snes and PS1, had other slight interference going on which usually solved by using a better cable normally but not nothing as specific as Jail bars.

I wonder if olivera has nailed it with the TI chip just having a nasty signal on it which interfears for many Consoles.

 

i tried lift pin 6 of cxa on va4 and va6 pal boards and got an amazing result
I always thought the jailbars/fishnet effect was the regular md video output till I read this forum, thank you so much

now picture is perfect and palette is solid on my trinitron crt and 1084s monitor

wonder if a on off switch is possible on pin 6 to alternate rgb jailbars free and composite/s-video modo if we do not want to have only rgb output

 

It's in german, but this could be the silver bullet we've been waiting for.

http://circuit-board.de/forum/index...-Platinen-RGB-Bypass-Switchless-Mod-Mega-Amp/

 

Hey sorry for raising the thread, but it looks like i'm suffering the same problem with a VA5 Model 1 Japanese, PIN 6 of the CXA doesnt do anything, but where is Pin 50 of the VDP or capacitor C28 located on this board so i can try to get rid of this god forsaken jailbars?