Tim, After about 20 minutes of playing, the picture starts rolling, colour fads to B&W and then disappears, with only sound playing. I can replace an SVHS tape with a VHS one, which plays fine, but SVHS about 20mins. I did read somewhere else on the web about the need to replace an I.C. I have the skills to do it, but not sure which chip, or where to find a replacement, hard I am sure!