I have no idea what you mean by scroller, but I suspect you describe one of the hydraulic functions. In this case if the judit shows signal on solo/multipilot, but the valve doesnt open, it's either not programmed as a function, or conditions are not met for this function to work(mast height/freelift sensor) also may he a broken wire for coil supply, but that's rare. Check h1,h2,h3,h4,h5 function assignments in judit, check wires, make sure all safety functions work.