Quoted from Skyemont:
90% of my lights are out. I just ordered 13 light cables. Replacing 1-13 to start. This sucks.
Quoted from LTG:
He's pretty well versed at figuring this out. His game has a few things going on. Both LED board and connector type stuff. We've talked in the past.
LTG : )
Edit: Never mind, posted before seeing Lloyds post. I'll leave it here in case it helps someone else.
I never had a cable fail, it was always a light board, usually a small GI board. I think the troubleshooting technique is to find the first board that is not working correctly (they're numbered and the manual shows how they're daisy chained) then bypass the board before it.
Reasoning is that the board that is bad is not passing the data on to the next board. If this doesn't work, then try bypassing the board that appears to not be working.
Once you bypass the problem board the lights should start doing something. To get them working correctly you have to go into the settings menu and let the system know which board(s) was bypassed.