For the past few nights I have been trying to trace the cause of aa annoying flicker that was sending some of my front gutter 2811 strips nuts at mid-high brightness levels. They would be fine until my front garden 30VDC PSU was connected - then they'd start flicking - sometimes occasionally (bearable), sometimes completely wreaking the show. The garden itself has 5 trees of (200 red/200 blue bigW and 300 OO green lights that have been twisted together then spiralled around each tree). These are wired to a 27ch DMX controller, then back to the 30V PSU. All PSU VE's are bridged together. Now whilst testing this afternoon, I noticed I was getting ~2.08VDC from the 27ch DMX controller's input EVEN when all possible sources of power cabling was disconnected - including the DMX lead in. Then as each tree was unplugged, this voltage dropped back. Measuring the disconnected lights themselves, this voltage was higher - varying initially between 6- 12v, but once it cooled down this afternoon they all seemed to drop to ~3v. I couldn't measure any current from them - my multimeter's smallest scale was mA and it saw nothing. The strings themselves are your usual 2ch red/blue/green strings that have been lightly twisted together. These strings have then been spiralled around the tree from bottom to top. Each tree is probably 1m wide by 2m tall. Now I suspect this is something to do with capacitance of the cable? I know power lines have the ability to induce voltage - but i didn't think this sort of thing could happen with a short run of xmas lights. Any one else seen this before? And more importantly - do you have an idea about how to solve this issue?