I think you misunderstand
Using the SSC Utility
I ran the lights on port 1 of the working board..... Flashed White
I ran the lights on port 1 of the non working board..... Nothing
I pulled the PIC from port 1 of working board and put in on non working board
I ran the lights on port 1 of the non working board with PIC from working board..... flashed white
based off that information I would assume the issue is the PICs then
However I went a step further of testing and thought I would share that information as it might help lead to a diagnostics:
with Working Board, Port 1, the working PIC ... I can run lights in XLights test and make go red, blue, etc...
With nonworking board, Port 1, the working PIC which now makes the board working and lights flash white.... I run XLights test and nothing happens
Didn't know if that information would be helpful so that is why I shared.