I have a Pioneer DV-969avi (singapore model) , Pioneer pdp-434hde, Yamaha RXV795RDS and Mission Cinema & speakers. I am having problems with the HDMI settings between the Plasma and the DVD player. Some of the DVD's will not play resulting in a white screen full of noise. This happens when i first load the disc or during the movie itself. Pioneer tell me the HDMI settings are too high. They are currently at 720p and changing them to 420p results in a poor quality picture. Can anybody help me asto what these settings should be and what gives me the best picture? Why will the player play some of the film at 720p then give me no picture? Do i have a faulty player or HDMI cable? Im considering upgrading the amp to a Pioneer ax5i. Would this help? appreciate any assistance. thanks.