Hi
I have an amplifier with RGB and Sync Phono connectors and I am connecting this to a scart equipped TV. (Input from source DVD player goes to to the AVAMP and then routed to TV from the AMP). I am receiving an image on the TV when I select the scart to be in RGB mode but there are some flickering lines on the screen. This is not the whole image flickering (as happens if I disconnect the sync cable) it is multiple (single pixel) flickering lines going horizontally across the screen.
I have independently disconnected each RGB cable (obviously this changes the colour of the image) to see if it is either of these cables but the lines remain. If I disconnect the sync cable the image is completely unstable as would be expected and therefore I cannot tell if the lines remain.
If I connect SCART to SCART from DVD to TV in RGB mode then the image is fine.
If I connect SCART to S-video (DVD to AMP) and s-video to SCART (AMP to TV) image is fine.
If I connect SCART to S-video (DVD to AMP) and RGB+Sync (Phono) to Scart) (Amp to TV) - AMP does conversion from s-video to RGB - I get the flickering lines.
Does anybody have any idea what may be the cause of these flickering lines or at least how I might diagnose them. Could it be bad shielding on the cable, a missing pin connect, bad grounding?
Thanks in advance.