pioneer pdp5050hd troubleshooting screen issue

[sgomes01]

I have a pioneer PDP 5060HD plasma television. Today the top half of the screen went black but the bottom and audio are fine. Any suggestions?

 

[hang-the-9]

http://www.justanswer.com/tv-repair/7jyg8-pioneer-plasma-pdp-5060hd-upper-half.html