At first I was very satisfied with the picture quality, etc. Then, just after 3 months or so, there were MAJOR issues with the TV. After a few hours of continuous use, the picture would go crazy; looking like old time scrolling film strips, all vertical lines and color bars. Then the screen would go mostly BLACK, with white vertical lines and stripes. It happened once or twice then didn't happen for a while. Another couple of months later, and it was happening every week or so. Then every other day. Now it happens sometimes 3 or 4 times A DAY! The tv must be turned off, allowed to rest or whatever, then when you turn it back on several minutes later, it's back to normal. A couple hours later, same thing all over again. Annoying and frustrating! Any suggestions?