I have a Sony KV-32FD1E that has an intermittent problem. It could work fine for a whole day and then the next be faulty. It seems to 'break' less when the contrast and brightness levels are turned down low. The screen goes bright white/grey with red diagonal lines across the screen, you can still see the tv image behind this. I think these are been called flyback lines? I would really appreciate any comments on what is causing this, what it is called, whats wrong and if possible how to fix it. Thanks in advance for any help given.