another update on my experience. Seems that the player has now died, I thought it might be the HDMI cable again, but tried a different cable and still having the same issue. Audio is fine, but the picture has random colour blocks constantly. Plan to call Toshiba today and start the warranty process. At this point, I'm not sure if I want a replacement player, I would just rather get a reliable player with worse picture.
DOUGGYD - 48" JVC - CRT-RPTV AV-48P575, Pioneer Receiver - VSX-1015TX-S,Athena Speakers, JBL PB10 Sub, XBOX 360, BEV 6120