iMac problem with screen

[sprehodec]

Hi,

I have 24" iMac (3.06GHz C2D, 4GB RAM) and since yesterday I have problems with screen. When I turn on computer and system starts to boot instead of normal grey screen with Apple logo I get grey screen with dozens of pink lines and parts of Apple logo are all over the screen, system never boots, stays that way no matter how long I wait, tried booting from install dvd but nothing happens. I contacted a local mac service and they say it logic board and it's less expensive to buy a new one than to replace that? Anyone had similar problems, suggestions what to do?

thanks

 

[TMRaven]

Yeah sounds like logic board. Apple proprietary logic boards are expensive, might be better off buying new refurbished iMac.

 

[Spikestrip]

Almost certainly a logic board, although there is a considerable chance it is just a cable leading from the MLB to the display, or even somewhere else. When I worked at Apple, we had a few of what could be the same computer (I can't be sure) that had a very similar problem with the computer not booting, and it actually turned out to be the optical drive cable. Cheap fix, but those iMacs are a pain to take apart without the right tools and a VERY lint-free room.

Spike