I have a Mitsubishi VS-60705 with a great picture for about 30 minutes, then the picture starts to narrow horizontally & then it will start to roll with a broad band of black lines rolling with the picture. sometimes the band of lines will start at the bottom & jump up to center screen. I've had the TV repair man make 3 house calls in the past week to try & remedy this problem, & each time the picture looks great 'till he gets out of sight & then it starts acting up again. If I have to call him again I guess I'll just list him as a dependant on my taxes. Can anyone tell me what's wrong with this set? Can I fix it myself? Thanks for any info & Merry Christmas!
Ask the technician if he replaced any caps in the vertical circuit. Have the TV running if he comes back out so it will fail for him, then he should be able to use freeze spray to see if he can bring it out of this state to make sure it's heat related or a component failure. I've heard of this problem before.