You're headphones are probably shot. And if you've tried replacing them and there still is no sound, then the inside of your device is fried. I would give serious consideration, if this is the case, in replacing your device. Hope this helps!!!!
my samsung YP-P2 froze after i turned it off properly but the background was still on there and now...
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my samsung YP-P2 froze after i turned it off properly but the background was still on there and now it's not turning on or showing me any type of response to my computer