I woke up New Year's morning with all my keypads blinking top to bottom signaling loss of communication with the processor. I looked in the panel and the processor appears to be dead, even though the power supply is delivering a little over 12V AC to the board.
Given that it it New Years and I doubt I'll get anyone here for two days, does anyone have any ideas on what I can do fix this or diagnose the problem? I haven't taken the cover off the processor because I'm not sure how to do it.
The system is 10 years old.