I was having problem with audio not playing at all, video and games were stuck at loading along with mp3 playing not play at all
and the day after, the audio works just fine, however i notice considerable loud of static noise being played after any sound being played and after about 5-10 sec the noise stopped (you can hear the noise clearly if you put speaker next to your ear)
i don't remember if that's the normal behavior when i was using it the first day
That doesn't sound normal at all. The PB's speakers are incredibly good for a tablet. Even when I have my music turned up to the max I don't hear anything going wrong with the music. It sounds like there is something wrong with your speakers. Take it back, and test some other PB's to see how their speakers are compared to yours.