I just completed the RMA process for the same thing. Send your laptop in the original box with the power brick. Nothing else needs to be sent back (per instructions powernotebooks sent me). Be sure to write your RMA number next to the shipping lable and include a note (i closed mine up between the LCD and keyboard) indicating the RMA# and problem.
Hope you get a good one this time! I'm happy to say mine is now perfect.
I've seen people pay tribute to the pixel gods by using this wonderful character...so here are some bannana sacrafices for the pixel gods: