If you use the power cable from your other One SL, does it power up?

You should contact Sonos Support:

https://support.sonos.com/s/contact?language=en_US

hi @ssoin check also the power outlet and try to plug it in another one that you are sure about it works - in most European countries the minimum warranty is two years but this may be different in your country - if the device is indeed faulty, I expect that Sonos will be helpful to repair or replace the device

Hi @el rubio we tried troubleshooting but it doesnt power up. Also tried changing wires from our other sonos one SL speaker and using a new power outlet. Would really appreciate if we could be directed towards repair.

GuitarSuperstar has already directed you to the process of contacting Sonos support.