Problems with Dot By Dot on Pioneer PDP-LX508D

[Ultraviolet]

When i play back Blu-Ray or Dvd through PS3 on dot by dot(full pixel) on Pioneer i get a vertical line of white pixels on very right hand side of image. I e-mailed Pioneer on-line help who suggested the Pioneer was not understanding the signal sent out by the PS3 and that i may need a stand alone Blu-Ray player or Plasma might be faulty. however I also have a theory and need some advice. I have read that because my plasma is a 36 bit 1080p display which is HDMI 1.3 compatible and the hdmi lead im using is specifically for PS3 gaming (Monster) and is not 1.3 this could be the problem. some teccy jargon about EDID was also explained which i could not understand. Any body care to enlighten me? I cant afford a stand alone Blu Ray player seeing as i have invested so much in the Plasma.