jamesn184 wrote:I have 2 wheelsets and neither magnet that I've seen lights up the sensor, only the cadence one does light it up red
And both a setup so it's as close as it can get without hitting the sensor arm
Sounds exactly like the problem I'm having. I tried a stronger magnet, changed where it passes the sensor arm and it still doesn't light up green with I test it. The cadence works fine though, both when testing and when riding normally. I think the sensor has had its time and needs replacing which is annoying as they are $50 to replace.