Hello, What are the symptoms of a bad iMac G5 video? Mine has probably no problems but I want to be sure just in case or for prevention. The only thing that bothers mewith my iMac video is that the LCD screen has never been vivid or crisp like some LCD pannels I see in stores, which are connected mostly to PC's. I created one or two profiles using Apple's own colorsync utility (expert mode) but the result is not very satisfying to my eye. Could be that I don't master quite fully this utility. Anyhow, what would the LCD pannel do if there were a faulty video. By the way, would it be the video card? Also can the iMac play a DVD in Dolby 5.1. if I hook up one of these home theatre genre speakers that can be found in any big stores? Thanks a million times Germain iMac G5/1.8 mhz/512 ram Tiger 10.4.2 français