Lost pitch/roll servos: D-sub vs Servo problem?

[Raymo]

My roll servo went out prior to first flight and I had to do the same thing. I rang out the wires and knew they were good but Dynon wanted me to do the swap.

To make things easier, I made another servo harness so I could just plug the pitch servo wiring into the roll servo. Same problem so it went in for repair and came back working like new.

[Aggie78]

Like a failed pitch servo I could point at and go "A ha!" to.

Not to be.

Moving the pitch servo over the roll servo and hooking it up there and the pitch servo worked like a champ.

So...Not a servo issue, it's an accursed, mundane wiring issue. Bah!!

Tomorrow I do the deep dive behind/under the panel to find the offending connector/wire harness on that end.

Hopefully, it will just be the connector and not a cut wire under the floor somewhere.

Posting all of this for future Dynon troubleshooters....

[Logan]

Hi, Rob. Did you find a bad connection to this issue? I am facing same issue.

I had to swap pins in the Molex that powered the pitch servo and pitch trim to fix a reverse pitch trim issue. When I plugged it back in, I lost both AP servos. I am sure I must have messed something up in the molex, as it was the ONLY think I touched, but can't for the life of me get it back to working. Hoping for a new aha moment for something else to look at.

Thanks,
Logan

[Logan]

Duh. Circuit breaker had tripped. As I am using a electronic circuit breaker system, I had to check the right page on the EFIS to see and reset it.

Posting to remind myself and others to start with simple checks first!