I am having some difficulty with the AD8130 in that the output goes to +12V. I have 7 systems and it happens on all, though it did not initially.
It was a bit hit and miss to start with, so I fitted R7 to reference the input, which initially seemed to do the trick. But now the outputs (pin6) go to rail - removing R7 now has no effect. I have one PCB that still works (R7 not fitted) when substituted in the system. I do not understand why this is happening, though I'm tempted to short out C31. The transmission line from the output is short and goes to a video encoder.