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Hi forum

I've interchanged plus/minus connecting the Lipo.
The ESC and the power module had bin killed
and I've replaced them. The plane worked well
for the next two flights. But today the APM
is not showing any reaction to the input signal
on port 1. I've looked only at the mission
planner's radio calibration panel. The signal
is shown when connected to other ports but not
on Roll port. I've uploaded the firmware again
but no success.

Is it a deferred kill of the APM or what else can
I check?

thanks
Wolfgang R.