This has been working but I looked at the video signal on a scope and it's barely recognizable as a video signal. Poor sync shape and over shoot, ringing in the video. I know its cheap and gets the job done but there are a few artifacts on the screen. Am I expecting too much from this little SS device? Is there a schematic available?

Maybe you want to buy my Lectrotek unit. I don't know if it's any better; I have never used it.