Originally Posted by
Herbie53
I just revived both my cadence/speed sensor and HRM by taking the battery out and cleaning / bending the contact out a bit. There was some stuff about it on the Garmin forum.
Was your symptom on both just total death? On my old cad/spd sensor, it would show odd speeds. I would be doing 20MPH and then all of a sudden it would say I was doing 60MPH, then 0MPH and auto stop.