Imac starts,the screen becomes grey and Appears with three horizontal hairlines which are remaining visible in any programme.Checking test with Techtool Deluxe all pass.When in Slumber Mode Screen reacts to action very weird with color flashes and stripesVery odd to say the least.
iMac, Snow Leapard
Welcome to the Apple Support Communities
From what you say, it looks like the display is damaged. The only thing you can do is to take your iMac to an Apple Store or reseller to get the display replaced
Welcome to the Apple Support Communities
From what you say, it looks like the display is damaged. The only thing you can do is to take your iMac to an Apple Store or reseller to get the display replaced
Screen shows in any program three horizontal hailines
