Where could I buy a processor for my system if need be? I had a power outage the other day and my system went out. The lights on the key pads were scrolling top to bottom and a OF code at the processor. I had it serviced and the lights came back on. The system is 15 years old and I'm sure its a fortune to upgrade. On a side note is it possible to remove all components of the system and go back to regular switches and lighting?