Hello,we know this strange converter is difficult to synchronize with Atari - Amiga via standard RBGS plug input ..
Here is my new solution via YUV input to VGA,screen is stable,no flicker,auto synchronize with PAL/NTSC,..
but losing a little colors like 20% of green,yellow,white,(not so bad).
(https://forum.8bitchip.info/proxy.php?request=http%3A%2F%2Fs17.postimg.org%2Fpe77juqlb%2FGBS_8220_CONVERTER_On_Atari.jpg&hash=8bc4b74632102791e7f0cb28cf32596a352b96ae)
Which online website did you buy this from?
From ebay..dont remember who seller.. china maybe
The single VGA v4 board is here I notice:
Ebay Item number: 120806675555
Yep, version 4 is more compatible and stumble with a lot old computers with RGB out,like Amiga,Atari,Spectrum 128.. ect. (if item has not problem of production)
Main board is old product 2009,and have some problems..
do you have this kind of artifact/errors around mouse pointer with GBS82(2)00 ??
http://www.youtube.com/watch?v=pKfnsqwW9WY
Fixed broken link photo in first post.