Appreciate the groups help on this please if possible... Until recently i have been connecting my NTL box via a JS RBG->Plasma VGA box direct to the VGA on my plasma.. this worked fine. But i changed my processor and wanted to use the YUV switching.. so. I replace the JS RGB->VGA to a JS RGB->YUV Box.... (switched on FMJ AV8) Ever since the change i now get a problem. Whilst watching TV (doesnt happen with other sources), i get an intermittant bending at the top of the plasma... looking at when it happens, it seems to be particularly sensitive to white.. as soon as there is a white background, or camera flash, i get this terrible bending - until a more colourful frame is on, then all goes back to normal. It looks like it looses sync tbh.... so, im suspecting the below.. comments appreciated. 1- JS RGB->YUV is faulty 2 - I need better sync signal (would a sync blaster cable help?) 3 - AV8 has an undersensitive Sync on G circuit, or i need to change a setting somewhere? any help advice appreciated. thx Kev FYI: Plasma is Panny 42W3 fed via component only - all scart/component leads are high quality.