I've had this indoor Aqualink RS6 trouble free for around 18 years. My neighborhood experiences power surges every month and have never needed to do more than reset the date and time. At the moment I'm running the pool equiptment from the outside control box using "service mode". The indoor controller reads "service mode is active." When not in service mode I can't get any of the indoor control panel buttons to function. I've tried the reset button, turned power off and then back on, still nothing. Any first step suggestions?