centris video problem help we have recently obtained a centris and it has developed an unusual video problem model with mb hd k vram no cards monitor apple when the computer is set for colors and certain operations are done particularly vertical scrolling through a window horizontal white lines appear on the monitor which generally but not always spare open windows these lines accummulate as the operation is continued if a window is moved over the involved area of the screen and then moved away the line disappear from that area of the screen this problem is not observed if the monitor is configured for colors or a inch apple monitor with colors is used i suspect a bad video ram chip but cannot be certain the problem has been apparent since day but has gotten worse we were wondering if anyone has seen anything like this and if so how to fix it please also respond to azelenet bigmac mskcc org thank you for your help andrew zelenetz molecular biology program memorial sloan kettering cancer center
