No, I haven't tried a booster, but I have tried doing extremely short runs to troubleshoot any problems with no luck.
(I hate to hijack this thread, but...)
My main problem right now is I have 4 pro bars, 2 of which I'm using them for the dimmer. The other 2 are currently used to mount a couple LED bars, the dimmers are unused. After many months (years?) of experiencing the problem of flashing (which for me is only occurs on one Pro Bar) I decided to swap it out with one of the "unused" ones. After taking time to do so, I realized I'm unable to program and assign DMX addresses on 3 out of the 4 Pro Bars. When I press any of the buttons 1 through 4 the display flashes to "A:001" and then back to "In" not allowing me to set the address.
I checked the fuses hoping maybe it was some sort of safety feature - one fuse was blown so I replaced it. Still no go. I've looked through the manual for any troubleshooting tips, etc but there was nothing there. Searched the internet and wound up here.
