Intermittent RRPM Sensor

[dunc]

My AR1 RRPM sensor is intermittently failing. I have inspected and wiggled all the connections while watching the LED for power/ground failures, and tried adjusting the distance between the sensor and the ring gear. It usually fails in flight, and generally comes back alive once landed or after hitting a few runway pavement cracks. I am considering mast-mounting a GoPro to watch the sensor LED during the in flight failures. Or mounting a newer handheld oscilloscope within the cockpit to monitor the signal line. All of these assume an intermittent wiring issue. It could be internal to the sensor.

Suggestions?

 

[Abid]

Obviously an intermittent wire connection or a cold solder joint in the signal or power or ground wire at the sensor.
Please send an e-mail and I will send a new sensor. Do not mount a Go Pro up there. Not worth it and better to change a $25 sensor