I'm trying to determine whether the problem I'm experiencing is due to burning errors with PD9 or defective disks. I burned several blu-ray disks with AVCHD video. They initially worked fine but now several months later the disks are no longer playable on my PS3. When they are played on my computer the video breaks up and is mostly all green. I'm using RiData 4X BD-Rs. It seems that they might be defective disks. Has anyone else experienced this problem or have any advice on what is causing this problem? Thanks!