System is a Dynon 1000 classic with single 10 inch display. About 3 weeks ago on initial boot up I noticed the info screen showing booting progress was very dim and at the completion of the loading a message appeared saying shutting down in thirty seconds. Since I was using the Ships aux battery for boot up I turned on the master and avionics switch and it booted normally by itself the second time. Today the system will not boot normally on ships battery or ships aux battery at all. The display is dimmer then normal and during the loading when the RTIO Manager starting line is showing it says could no initialize RITO UART port. After loading is complete the PFD starts to flash and a Red x flashes on and off WITH ADAHRS FAIL MESSAGE and a POWERING DOWN IN 30 SECONDS BANNER. It shuts down even if the stay on button is pushed and starts the boot cycle again by itself over and over. The strange thing is if I turn the avionics and ships battery off after it says it is shut down it boots on the Dynon B/U battery and the display is normal with no ADHARS failure noted. But when I turn on the ships battery it immediately displays a ADAHRS FAIL warning, a flashing red X on the PFD and the 30 second shut down warning starts again. Could this behavior be caused by the B/U battery circuity? Ships Battery and ships aux battery are fully charged and showing 12 volts. The Dynon B/U battery was showing 11.1 volts when it was powering the system by itself and discharging. Any suggestions of where to start.
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Classic Boot up Problem
- Thread starter Edwardoc
- Start date
Disconnect the bu battery and see what happens.
if anything is already set to power up when master is on, power then off (aka all radios , etc ) and see if it boots without issue. The only time I have had an issue was lack of power being provided to display, and yes it showed 12.1v when it happened, so now I need to start the engine and than power up my other display and electronics. Primary remains on battery through boot up and power start.
if anything is already set to power up when master is on, power then off (aka all radios , etc ) and see if it boots without issue. The only time I have had an issue was lack of power being provided to display, and yes it showed 12.1v when it happened, so now I need to start the engine and than power up my other display and electronics. Primary remains on battery through boot up and power start.
Update: Was able to finally do some trouble shooting and discovered a blown fuse from my main power buss to the EFIS. Apparently the last two flights, the EFIS was booting and operating on the Backup Dynon Battery. Replaced the fuse and it now boots normallly on ships power. Not sure what indications you have when the system reverts to B/U Dynon battery. Have to do some reading the manual. I also have an auxiliary B/U 8 amp battery left over from my Blue Mountain installation. I just left it in the aircraft and use it to boot the EFIS without having to power up the main buss. I may have a diode problem with that system as it will not boot on that battery source.