My S3 just started showing major pixelization and purple horizontal lines today (live TV, menus and shows recorded today). What's really strange is that shows that I recorded before today will play fine other than the purple horizontal lines. Shows that I recorded today are unwatchable because of the pixelization, audio dropouts and the horizontal lines (same problem with live tv). I've rebooted several times and the problem does not go away. When I reboot, the screen looks fine until it gets past the "Almost There" screen. Once that disappears, the purple horizontal lines appear. I also checked under DVR Diagnostics and see a lot of RS Uncorrected. Any idea what this problem could be? I did a search here but didn't find much. Does it sound like a power supply issue?