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Dynon EMS-D10 Re-booting in Flight

mrecht

I'm New Here
Trying to help a friend in France who is having problems with an EMS-D10 installed in an RV9a. The EMS was bought around 8 years ago but was just powered up for the first time a year or so ago when the plane was completed.

All the readings work fine but the unit intermittently powers down and then immediately re-starts with the blue Dynon startup screen - this can happen several times in succession and then be ok for a while and then the cycle re-starts. The problem seems to happen most commonly when the aircraft is being prepared for landing (power reduced, slowing down...) so it looks like an issue possibly linked to vibration level.

He has double checked the power supply & ground connections to the EMS-D10 and is sure that isn't the problem.

We enabled data logging and sent dumps to Dynon but they did not find anything unusual in the files just prior to the unit re-booting.

If there was a problem with one of the active sensors (carb temp or manifold pressure) whereby the +ve supply wire to the sensor was intermittently shorted to ground (maybe internally to the sensor or in the wiring), would this cause the unit to re-boot ? Is the problem most likely to be within the EMS unit itself or the installation ?

Any other thoughts gratefully received !

Thanks
 
Trying to help a friend in France who is having problems with an EMS-D10 installed in an RV9a.

He has double checked the power supply & ground connections to the EMS-D10 and is sure that isn't the problem.

Any other thoughts gratefully received !

Thanks

Did he also check the pins in the D-Sub connector, maybe one slipped back or bad solder/crimp.
 
yes there was a bad pin and we thought that had fixed it, but no. the harness was supplied by steinair so is pretty well made.

thanks
 
Intermittent

Intermittent had the same problem . Are used contact cleaner and reassembled and it never happened again Good luck
 
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