I have a dynasty spas with a gecko in.xe 5-11-H4.0 spa pak and a touch screen control. Went away for a few days and my kids used the spa a bunch and a flow error was on the control when I checked. Filled the tub, powered off and restarted the tub. Went through startup with no pumps firing for a while then a message showed up saying check controller cable or update pack software or something like that. Powered off unplugged controller and plugged back in and now it is stuck showing the hello logo and initializing forever. There is a regular relay click from the pack. Pulled the 3 fuses and checked continuity and they are good. What would you pros check next?