QUOTE(shark7 @ Sep 13 2012, 03:03 AM)
What to test beside speaker?
WhT music should i play to test?
Your n56 is 750gb i5 or i7 1tb ??
I have a friend who recently bought an i5 N56,
that laptop has some static when it is plugged in with adapter,
so i think better you check whether the laptop have some electromagnetic thingy or not -__-
and check for dead pixels, keyboards, USBs, I can say everything you think it's possible,
even better try to shut down the laptop completely and have a boot,
because mine experienced twice that when I boot the system it doesn't display anything,
have to press the power button for long time then it restarts and everything goes normally..
the first time is the second day morning after I bought so.. haha, hopefully it's not fatal.
For speaker maybe you can try as many songs as possible as not many songs giving buzzing sounds,
maybe Party Rock Anthem like what few posts above mentioned?