- On the back of the SonaWAVE HD, please set the Power switch (ON/OFF) to ON.
- Is the switch in the ON position, does the LED still not light up?
- Please make sure that the AC wall outlet you are using is properly working, try the AC adapter in a different wall outlet.
- Does switching to a different wall outlet solve the problem?
Please contact customer service if the troubleshooting above does not solve the problem.