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Old 06-25-2017, 05:14 PM
dick seiders dick seiders is offline
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Default D180 brightness issues

Don't know if this already discussed, but couldn't find on search. My d180 brightens up at start and by the time I am taxi-ing out in the sunlight it goes to about half brightness (or less) . After takeoff screen (efis/ems} darkens to almost unreadable. Mine was new in 2010 don't know if nits have been improved since, but believe my vintage had 400. Is there anything I can do with it or must it be replaced? (I haven't yet asked Dynon as earlier help experiences with them were not helpful)
Any comments to steer me to a solution are very much appreciated.
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Old 06-25-2017, 05:28 PM
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rvator51 rvator51 is offline
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Default Long shot- sensor

I am not sure but their is probably a tiny sensor on the front of the unit somewhere that senses the ambient light and auto adjusts the screen. Is it possible there is blockage or crud covering the sensor?

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Old 06-25-2017, 05:34 PM
Mich48041 Mich48041 is offline
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Location: Riley TWP MI
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Have you tried adjusting the brightness? Quote from manual:
press any button beneath an EFIS page (except the far left or far right hotkeys) and press MORE > DIM and increase the brightness
Also search the manuals for BRIGHTNESS and search the pilot user guide for AUTODIM.
Joe Gores
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Old 06-25-2017, 06:45 PM
dick seiders dick seiders is offline
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Posts: 905

Will check for sensor. If there is one I am unaware of it.

Have tried brightess adj. on efis with the result that the unit states that full brightness is default setting as a result I could only dim it which of course is not what I need. i will try the buttons plus "more" to see what happens ,Joe.

Just curious has anyone else ever reported this difficulty? Has anyone had to have the d180 repaired for this issue? If so was the improvement real or marginal?

Thanks for input.
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Old 06-25-2017, 08:28 PM
RFSchaller RFSchaller is offline
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,325

The sensor may be on one of the other avionics components. I think the Garmin units (com and XPDR) have sensors. Since everything talks to each other on the data bus that may be the sensor input. It's been 5 years since I set up my D-180 and D-100, but I do remember a menu item to max the brightness. Since my 12 is a day VFR machine I haven't ever worried about changing the brightness again.
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Old 06-26-2017, 09:19 AM
dick seiders dick seiders is offline
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I will keep trying but clearly there is a D1 80 problem as my Garman 496 and my iPad are clear and visible in the same light and conditions at the D1 80 fades out and becomes essentially useless
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Old 06-26-2017, 09:41 AM
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Brantel Brantel is offline
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Do you have a HS34 or AP74? If so, the brightness may be controlled by their built in sensor over the bus...
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