D100 shuts down

[Andy]

Hello all together,
my Name is Andy and i am using a D100 with AP74 in my 2013 Bristell.
today i experienced that the D100 shut‘s down After 30 min.
i switched the power off and back on and it restarted.
then ist stays on for 2 Minutes and Went out Again.
as More as i Switch off and on as shorter are the periods.
any help or ideas would be Reallohn appreciated.
thanks and regards
andy

 

[jakej]

Maybe it’s just running off the internal battery, if one is fitted. What volts are being displayed when engine running ?

 

[Andy]

Hello jake thank's alot for your quick response.
i didn't expect and reply that fast.
As more as i'm thinking about the symtom's as more logic seems your answer.
I've studied the whole night the manuals and at least i know now how to get the damn thing out off the dashboard.
I need to leave today for a week and i'll doublecheck as soon as i'm back.
I definately let you know then.
Thank's alot for your help
Happy landings
Regards Andy

 

[jakej]

No need to remove the unit ,yet.
If you turn the master on & let the Dynon boot up, & then master off, does a 30 second countdown type message display on the Dynon ? If YES then you do have an internal battery.
The other question still needs to be answered - how many volts is displayed on voltmeter when engine is running ?
Enjoy the vacation

 

[Andy]

Hello Jake,
i checkendem the Efis once more yesterday.
Here is what i figured out:
I switched on the masterswitch and Engine Instruments, the Voltmeter Shows 13,2 Volts
Then i switched EFIS on with the external Switch on the dash, it booted Up and Shut down after a Minute without any Message into a dark Screen.
with Engine Running ist is the Same, except the Voltmeter Shows 13,8 Volt.
As soon as i switch the external efis switch off and on again, it rebooted again and Shuttle down after appr. a Minute.
Then i took the dash cover away and disconnected the Bus connector on the backside of the D100.
So now there wasn’t any external Power anymore.
i pushed the left Button on the efis and the unit booted up and Keeps staying on?!
After arround 15 minutes i hit the left button once more and it shuts down which should be ok i think.
So That Shows me that there must be a back Up Battery inside which might be ok.
Then i reconnect the Bus connector on the backside and disconnected the plug on the AP74.
With this plug disconnected the whole system doesn’t work anymore!
I am not sure what to do or checked next, I took both units out of the dash and have it on my table here now.
Even here on the table without any external power source I can switch the efis on and it stays on the internal Battery Until I switch it off again.
i am totally confused now!
Maybe this issue is caused by the autopilot unit?
Do you think I might should send both units to dynon for a check?
i am a bit clueless now.
Thanks a lot!
Regards
Andy

 

[jakej]

Andy, there is one other simple thing to do before you contact Dynon support - bypass the panel power switch for the Dynon by just removing the wires & joining them together as there is absolutely no need to have a separate switch, it potentially just creates another failure point. Then do the test again, if the result is the same then contact Dynon support directly. HTH.

 

[Andy]

Hello Jake,
thank's alot man, that sounds logic to me even in the manual they say a seperate switch isn't neccessary.
I will check on that wednesday.
I'll let you know then.
You have a great day!
Regards Andy