Whirring noise when not in use

[holycacao]

Hi there,

I have a ~1 week old pre-built kit (thanks @eMadman !) that makes an odd whirring noise when not in use. I've attached an audio file where the first 3 seconds are just the baseline noise in the room for reference. Any ideas?

Firmware: 23.4.24-develop
Bike: Bowflex C7

SmartSpin2kNoise.zip

[eMadman]

Hmm, this isn't one I've experienced when testing the assembled units. Could you try unplugging it and reconnecting the power? Does the issue persist?

If it does, can you try a firmware reset next?

[holycacao]

Just unplugged and reconnected. Will give it a few days and see if the noise starts happening again.

[holycacao]

I was waiting until I used the bike again to report back, but it will probably still be a couple of days. The noise is a bit quieter after the reboot, but still present. Could it be a fan? In the meantime, I just updated the firmware, so we'll see if that does the trick.

[doudar]

I was waiting until I used the bike again to report back, but it will probably still be a couple of days. The noise is a bit quieter after the reboot, but still present. Could it be a fan? In the meantime, I just updated the firmware, so we'll see if that does the trick.

The only motor is the stepper motor which should power down whenever no app is connected. Are you able to rotate the knob freely when no app is connected? If there's resistance, that means the stepper driver isn't disabling properly or something is still accessing the SS2K.

It could also be a power issue. Either a bad filter capacitor on the main board (we haven't seen that yet on r3) or more likely a bad power supply. Do you have a different power supply that you can try? Anything between 9v-24v and >1a, as long as the barrel connector fits into the SS2K should be okay for testing. If you plan to use it long term, you'll want a >1.5A rating.

I'd also try a different outlet. Possibly something else on your circuit is causing large power spikes.

[holycacao]

To update, the noise isn't really any better, even after the firmware update. And indeed, the stepper motor appears to be engaged - it is difficult to turn. If I unplug it, I can freely turn the knob. Are there any logs that would be helpful to further diagnose? Could the C7 be erroneously continuing to send a (bad) signal to the SS2K?