I have a set of four Blizzard Puck Fab 5s. http://www.blizzardlighting.com/index.php?option=com_k2&view=item&layout=item&id=172&Itemid=151.
I've noticed a distinct, intermittent flicker in these lights, and have been trying to track down the source. The flicker happens at least once (sometimes much more than once) every 15-30 seconds. It makes the lights almost useless in many circumstances.
The tech support rep at Blizzard suggested the issue was my controller (ShowXpress 6.33 with an Xpress 512). He said my controller was refreshing at a frame rate that was too low for the lights, creating a flicker.
He asked me to disconnect DMX and set the Puck to a static color, and see if the issue persisted. During the duration of my phone call, the Puck didn't flicker. I haven't yet done a longer test.
I remain skeptical that the issue is ShowXpress, given that nothing else in my lighting inventory has ever had any problem at all with ShowXpress.
Can anyone speak to this issue? Could ShowXpress be the problem?