Mask won't turn on

If your CHOUOHC Radiance LED Mask isn't responding when you try to turn it on, work through the steps below in order.

Step 1 — Hold the button, don't press it

This is the most common reason the mask appears unresponsive. The power button requires a held press of 3 seconds to turn the device on. A quick tap will not work.

Press and hold the top button for a full 3 seconds
You should see the LED lights illuminate and the mask begin its session
If nothing happens after a 3-second hold, move to Step 2

Step 2 — Check the remote charge

The mask is powered by the remote (controller). If the remote is out of charge, the mask will not turn on at all.

Plug the remote in using the provided charging cord and adapter only
The indicator lights on the remote will turn on during charging and turn off when fully charged
Allow the full 3 hours to charge — do not unplug early
Once charged, try holding the power button for 3 seconds again

Step 3 — Check the connections

Make sure the charging cord from the remote is firmly plugged into the neck piece connection port
The mask will not power on if the connection is not seated properly
Try removing and re-inserting the cord at both ends

Step 4 — Check the charging indicator

While the remote is plugged in, do the indicator lights on the remote come on?

Yes, lights come on while charging → the remote is receiving power, continue charging for 3 hours
Lights come on briefly then turn off → the remote may be fully charged already; try turning on with a 3-second hold
No lights at all → check the cable connection at both ends; try a different power outlet; ensure you're using the included adapter

Still unresponsive?

If the remote appears charged and the mask still won't respond after holding the button for 3 seconds, there may be a fault with the device. Please contact us at support@chouohctokyo.com with a description of what you see (or don't see) when you try to turn it on. We may ask you to send a short video so our team can assess the issue.