D120 won't turn on

X

Xmid

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Joined
Jul 25, 2024
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1
About a year ago, while buying my plane, I had the D120 sent back in to Dynon for service/updates and to have the backup battery replaced. It worked great for the last year. Recently, I had an issue with one of the EGT probes reading 2099 regardless of whether the engine was running or not and assumed I needed to replace the probe. I flew the plane a few days ago and the D120 was working fine other than the bad EGT probe. The next day I went out to fly and the D120 would not power up when the avionics master switch was turned on. Occasionally the black screen would have a light flicker like it was trying to boot up, and about every 10-15 seconds I could hear a very faint clicking sound coming from behind the avionics panel, but the screen never came on. I've opened up the back of the panel to see if there were any obvious loose connections, but that is the extent of my trouble shooting. Does anyone have any idea where I should start looking for the problem? Thanks in advance.
 
Rhino

Rhino

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Jul 20, 2009
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Sounds like it's getting power, so I would contact Dynon support.

Dynon Avionics | Contact Dynon

Contact Dynon Avionics with questions, customer support or technical help with your SkyView system or EFIS systems.
dynonavionics.com
 
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palmqug

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Jul 13, 2024
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5
Xmid said:
About a year ago, while buying my plane, I had the D120 sent back in to Dynon for service/updates and to have the backup battery replaced. It worked great for the last year. Recently, I had an issue with one of the EGT probes reading 2099 regardless of whether the engine was running or not and assumed I needed to replace the probe. I flew the plane a few days ago and the D120 was working fine other than the bad EGT probe. The next day I went out to fly and the D120 would not power up when the avionics master switch was turned on. Occasionally the black screen would have a light flicker like it was trying to boot up, and about every 10-15 seconds I could hear a very faint clicking sound coming from behind the avionics panel, but the screen never came on. I've opened up the back of the panel to see if there were any obvious loose connections, but that is the extent of my trouble shooting. Does anyone have any idea where I should start looking for the problem? Thanks in advance.
Click to expand...
I don't have any ideas on a fix, but I'm about to upgrade to EMS-220 on my existing 2x10" SV classics and ditch my EMS-D120. Lmk if your interested in buying it.
 
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dj-tentacle

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Joined
May 14, 2024
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11
Xmid said:
About a year ago, while buying my plane, I had the D120 sent back in to Dynon for service/updates and to have the backup battery replaced. It worked great for the last year. Recently, I had an issue with one of the EGT probes reading 2099 regardless of whether the engine was running or not and assumed I needed to replace the probe. I flew the plane a few days ago and the D120 was working fine other than the bad EGT probe. The next day I went out to fly and the D120 would not power up when the avionics master switch was turned on. Occasionally the black screen would have a light flicker like it was trying to boot up, and about every 10-15 seconds I could hear a very faint clicking sound coming from behind the avionics panel, but the screen never came on. I've opened up the back of the panel to see if there were any obvious loose connections, but that is the extent of my trouble shooting. Does anyone have any idea where I should start looking for the problem? Thanks in advance.
Click to expand...
The D120 does not have a battery. Only the D100 or the D180 has.
 
Rhino

Rhino

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Interesting that the installation manual talks about it then.
 
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dj-tentacle

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May 14, 2024
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What page?

Revision H mentions it only in the warranty disclaimer and in a warning where it's a generic statement that says EFIS-based devices.
Compare that to the EFIS D100 installation manual because that one has an entire appendix for the backup battery and you'll see the difference.
Don't get me wrong though. I wish you were right as I'd love to have a backup batterie in the EMS as well.
 
Rhino

Rhino

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Messages
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That's why I find it interesting. You think they'd make the distinction known, rather than a generic statement seemingly applicable to all EFIS's.
 
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