Make sure:

The volume is not too low when using Aux-in / other input as the playback source

• When using Aux-in as the playback source (e.g., when you have connected a MP3 player to the device) and when the volume is too low, the volume signal may not be strong enough to be detected by the device and therefore the playback does not start, or stops. To prevent this, increase the volume of the external source.

Sleep timer is deactivated

• When the sleep Timer is active, the device will then be switched off automatically after a set period of time. Deactivate your sleep timer by pressing the Sleep / Sleep timer button.

If the problem persists, contact Philips Consumer Care (Philips Support Page) for assistance.