Forgive me not familiar with merlins i work on norstars, but i have a friend who has one at there office. The system seems to have croaked. He came in and had no dial tone on phones and display showed time of night before. He power cycled the system via button on power supply and no help. I went to site and power cycled and noticed the processor card cke4 has a digital readout and after multiple power cycles that card has no lights and no phones have lights. If processor is bad can card be replaced without reprogramming the system. It has a pcmcia card in the processor card now but not sure if it has been backed up. Not sure what release but this is info off processor card. CKE4 108261678 517L33A.