No or poor sound from my Philips Key player

The problem with poor sound quality or no sound may be associated with the following: * The Pause mode of the unit may be activated. If so, de-activate Pause by pressing Play again. * The connections to the headphone may be loose or the headphone jack could be dirty. Check and clean the connections. * The Volume is set to low. If so, adjust the volume level. * Keep the set away from active mobile phones