Hi all, Thanks for the replies, I have only just seen them as the email notifications went to my junk folder. The exact issue is that when I send a DMX command, the scroll moves at most 5cm in one direction from wherever it is on the scroll. The scroller doesn’t locate when initially powered which leads me to suspect a motor issue but having not really worked with scrollers I can’t . These particular gel stream scrollers have two indicator lights on the bottom, power and DMX, which come on respectively when selecting the DMX control option and upon powering the unit. I haven’t managed to find and further LED’s on the unit to give me any other indication as to status - whether they are on this particular model I wouldn’t be able to tell you as I have only just started working with scrollers. Robertdazzler, where would I find the analogue 0-10v input on the PCB. The unit doesn’t have any external analogue input connections so I would suspect it is only on one of the two PCB’s in the scroller. If you could email across to me the information that you have that would be great. I will send across my email address to you. Many thanks, SRT456