EDC-D10A blanking D10A

[16FW]

I was running my D10A on the internal compass, but I found an un-used EDC-D10A for sale online. It is older (s/n 004354) but still had the factory lable over the DB9 connector. I opened it, and removed the D3 diode. When I connected it, the D10A blanked out. I double checked the cable, and the D3 came out clean, no shorts on the board.

 

[dynonsupport]

If the power line going to the EDC was getting shorted to ground, you'd see this as an effect. This would most commonly happen if there's something up with the wiring going to it. The fuse in the EFIS self-resets, so your EFIS should be powering back up once you remove the short. I don't think we've seen it before, but if the EDC were causing the short, that's effectively the same thing. To test that, measure resistance on the EDC, between pins 6 and 1. It shouldn't be shorted, basically. There should be a bunch of resistance there.

 

[16FW]

The EFIS does restart once I remove the EDC. I will measure the resistance this evening.

 

[16FW]

I checked the resistance between pins 1 & 6, and it is about 3 megs one way, and 10 megs the other. I did notice between 1 & 7 is only about 2 ohms. I don't see any wiring going to pin 7, though.

 

[dynonsupport]

I'd next confirm that the EDC pinouts at both ends of the D25 and D9 harness are correct.

 

[16FW]

OK, it will be the weekend. Thanks.

 

[16FW]

Well, pin #6 (+12) had the insulation burned, so the wire was shorted to pin #7, which must be internally grounded inside the EDC :-[

 

[16FW]

I tried calibrating the EDC, but I kept getting strange messages, like I needed to supply the magnetic intensity, but I had done that a year ago for the internal compass.

I did go to the website, and got the numbers again, and went ahead and downloaded the 5.3 firmware. Today, when I tried to do the firmware upgrade, I get "EDC not found". I looked at it, to be sure it was connected, but it was hot, so I unplugged it

 

[dynonsupport]

Pin 7 is only used if you have an OAT connected, in which case it's a 5V power supply generated by the EDC. In any case, it's generically bad for the 16V line to go to places that it shouldn't be going to. The EDC-D10A is likely broken, and there's a chance, depending on what was shorted to what, that the EFIS may need repair too. Give us a call when you get a chance.

 

[16FW]

From the Dynon website:

Out Of Warranty Repairs
For out of warranties repairs, Dynon charges a flat rate of $275 plus shipping charges.

What if the device only costs $100?

 

[dynonsupport]

That's for EFISes, EMSes, other major components. For other smaller items, once the warranty is up, they are generally considered non-repairable. On a case-by-case basis, we may make accommodations. Give support a call to see what we can do in your case.