Problem with my power button

fonzejaa

New member
Sep 28, 2013
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Hi all, I recently started facing a problem with my Lumia , when i hit the power/lock button to the sleep the mobile the sound that i used to hear when i hit the button doesn't appear anymore !
any help ?
 
I have checked my mobile now and it gives me sound now but i tried to lock and open it again and the sound is gone again !!