I have an ongoing problem with two different customers. Both have Merlin Magix systems w/ R2 software. The DLC operater position has 2 DSS adjuncts. The first DSS works just fine, the second DSS worked OK for about the first week and then the busy lamp fields died. The buttons work, but the lights will not light. I can reverse the DSS's and the problem continues but only w/ the DSS in the 2nd position. So I know the DSS is OK, I have changed the power supply 2x with NEW ones and have changed the 412TDL module and the 4424LD+, all w/ no success. It would appear to be a power related problem, but I am stumped. Has anyone else had this problem, Does anyone know how to fix it???? Thanks