Perform the following steps in the order listed.
Put the non-responsive earbud in the charging case. Wait till the LED turns red, then remove. Is the touch sensor now operational?
Yes - Problem resolved.
No - Continue to Step Two.
Can you hear sound when using the touch sensor on the non-operational earbud?
Yes - Continue to Step Three.
No - There appears to be a service issue with the earbuds. Contact your place of purchase or contact a Panasonic Authorized Servicer.
Perform a factory reset.
After a factory reset, is the touch sensor operational?
Yes - Problem Resolved.
No - There appears to be a service issue with the earbuds. Contact your place of purchase or contact a Panasonic Authorized Servicer.