SV 1000 Power problem

[Edwardoc]

I applied power to my SV prior to engine start as usual using a ships B/U battery I have installed. I got the normal boot screen and as the items were scrolling it hung up at the RTIO line and then a message line appeared that said "Could not initialize RITO USB port, Restarting. It would restart to this line over and over and would not go any further. I finally turned ships B/U power off and now the SV boot screen appeared and the system completed startup and I got my normal screen. It had booted up using the internal SV B/U battery. I checked the SV battery status and it indicated 10.9 volts and "Discharging" I exited back to my normal screen and selected Ships main battery power on.
I immediately got a flashing RED X and ADHARS FAIL message and a Power down in 30 seconds message. I toggled buttons 7 & 8 and checked Battery status and it indicated B/U battery Discharging. When I exited the status page back to my normal page it reset the shut down timer back to 30 sec's to shutdown. Turning ships power off returned it to normal display and running on SV B/U battery.
It appears it will boot on the Internal SV B/U battery but will not get past the RITO USB stage in normal or B/U ship's power. Ship's power was indicating 12.8 volts.
I had flown two days prior and all seemed normal except I did notice some slight brightness flickering during the bootup that it had not done before but it operated normally on a 1 hour flight.
Any ideas where to start. Let me know if I need to call. Doesn't appear to be anything easy to fix.

 

[Dynon]

Yes, please do get in touch with our support department directly at 425-402-0433 or support at dynonavionics dot com.

 

[Edwardoc]

Just so all know: The problem was a blown fuse in my power line. But very strange indications. There is a possibility it blew on the previous flight and I did not realize it. Only thing that is confusing to me is how did it know to boot up on the SV internal battery when I applied power (which was not available due to blown fuse). Only explanation is I am using these Spade fuses that have a light emitting diode in it which is supposed to tell you the fuse is blown. When I put a meter on the bad fuse it indicated 4 tenths of a volt instead of 12 voltes +. Maybe this was enough to set the boot up in motion using the B/U battery. Indications after that were very confusing as noted above. But it's working now. :