I have 4 of these in my current setup. I just finished the install of it last week and have problems with one of the lights since the beginning. Sometimes it's picking up the DMX signal and other times it isn't...it will just randomly lock it out. At first this problem could be fixed by unplugging and then plugging the light back in but now that's not working. Everything else works great including fixtures that are daisy-chained to the light that come after it in sequence...any help?