D10 EFIS (original) intermittent issues

rv7charlie

New Member
Joined
Jul 30, 2019
Messages
2
Hi, 1st post, related to a new-to-me D10 EFIS.

I've owned the plane about 3 months. The D10 has the remote compass and OAT probe. Since purchasing the plane, sometimes when I try to configure 'info' to show OAT & true airspeed, nothing shows up. After multiple attempts (often during a flight), it will show up. Occasionally, it'll disappear during a flight, as well.

A new symptom just showed up today, doing T&Gs during my 3rd flight of the day. The display went to monochrome and a message popped up saying that attitude was unavailable (or unreliable; I've forgotten which). As I continued to do T&Gs, the D10 repeatedly would go blank and then reboot itself. I thought at first the reboots were related to flap up/down action, but then I noticed it happening even in level flight with no electrical 'actions' taking place.

Once on the ground, I couldn't duplicate the rebooting problem (of course...).

Any thought on whether the two symptoms could be related? Could an intermittent connection between the remote compass & the EFIS cause the EFIS to reboot?

Thanks for any help,

Charlie
 

Dynon

Dynon Staff
Staff member
Joined
Jan 14, 2013
Messages
13,320
Location
Woodinville, WA
So first thing - Is this an EFIS-D10 or EFIS-D10A? If you don't know, a picture of the unit while powered on would help here. Or go to SETUP > VRSION and report back what you see here.

I don't think we've ever seen the OAT/TAS widget just stop displaying. Do you mean that the widget is still there but is "dashed" (ie, "---" appears for in the field). If that's the case, a remote compass intermittent connectivity issue could be the culprit, as the OAT connects through it.

The "attitude indeterminate" should only show up if the roll/pitch/yaw rate limit of 150 deg/second is exceeded. You wouldn't expect to see this due to the movements seen in normal landings. The fact that it's rebooting could be indicative of an intermittent power connection, or perhaps something more internal to the unit.

You might get in touch with our technical support team directly at 425-402-0433 or support at dynonavionics dot com for further help here.
 

rv7charlie

New Member
Joined
Jul 30, 2019
Messages
2
So first thing - Is this an EFIS-D10 or EFIS-D10A? If you don't know, a picture of the unit while powered on would help here. Or go to SETUP > VRSION and report back what you see here.

I don't think we've ever seen the OAT/TAS widget just stop displaying. Do you mean that the widget is still there but is "dashed" (ie, "---" appears for in the field). If that's the case, a remote compass intermittent connectivity issue could be the culprit, as the OAT connects through it.

The "attitude indeterminate" should only show up if the roll/pitch/yaw rate limit of 150 deg/second is exceeded. You wouldn't expect to see this due to the movements seen in normal landings. The fact that it's rebooting could be indicative of an intermittent power connection, or perhaps something more internal to the unit.

You might get in touch with our technical support team directly at 425-402-0433 or support at dynonavionics dot com for further help here.
Thank you very much for the reply! I posted here because in an earlier phone call to Dynon tech support for just general oprational info on the product, the person that answered basically told me to throw it away (that is almost a quote) since the factory no longer supported it.

It's a *non-A* D-10 (sorry; tried to say that with the [original] in the subject line).

The OAT/TAS display just goes away completely, as if nothing is selected for that 'info' display area. When its having the issue, the OAT/TAS won't display on either the left or right info area. It is often gone when I 1st start the plane, and won't display when I select it. After repeated attempts during a flight, it will sometimes appear. It sometimes remains for the duration of the flight, but will sometimes disappear again during the flight. My 1st thought, also, is that the compass module is losing its connection to the EFIS. Next step on that front is to find the compass module. :)

On the rebooting issue: This is new; just happened on the last flight I took, and happened at least 4 or 5 times while doing about a half hour of T&Gs. I could not duplicate the problem on the ground. The only other anomaly I noticed during the flight was the voltmeter in the EMS-D10 occasionally going into the yellow range, at around 14.7V. Never saw it go higher than 14.7. but obviously wasn't watching the voltage display constantly. Normal voltage in this plane is 14.4V.

The D-10 *does* have an internal backup battery.

So,
Could an intermittent connection to the compass module cause a reboot?
Could intermittent power connection (given the internal backup battery) cause a reboot?
Could intermittent voltage excursion into the high 14V range cause a reboot?
Or, am I likely faced with impending failure of the D-10?

Again, thanks for the help! (Happy to make the call if that would be easier.)

Charlie
 
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