Try charging the Roam with a 5V/2A (10W) USB power adapter. A standard 5V/1A (5W) phone charger will not be enough power to charge the Roam.

If ROAM is fully discharged, it will not respond immediately when the charger is attached. Allow the unit to charge for a couple hours, then re-evaluate.

After this charge, if the unit will not start up normally, remove the charger and hold the power button for at least 12 seconds.

And I’d recommend a direct connection, not induction charging, at least until you get it back working. Remove at least one of the variables….

My two Roams are regularly unreliable, often dead, then won’t charge off a viable receptacle until, wait, now it’s charging, briefly, hey w got to 22%, now it’s not charging, repeat etc.

Roam no longer charging…  Sonos sent me a power adapter to try but not sure what that might solve as I tried no less then a half a dozen different bricks I already own.  Not one of them worked including the brick Sonos sent.  What other options are available to bring this back to life?

Adam

Here’s a suggestion to perhaps try:

1. Remove all power from the Roam - remove from the USB/Qi charger.

2. Hold the rear power-button down for 25+ seconds 

3. Plug in the USB charger and let it charge for half an hour to an hour

4. Remove the USB connection and repeat the 25 second power-button press uit may wake-up (flashing status led) before you get to 25s, in which case you're done].

5. At this point when it’s working, charge the the Roam fully. It should stay awake on USB power.

You may have to repeat the steps 1 to 4 above to sometimes get the Roam to spring back to life, but just be patient with it.