Cinema Display 27" with iMac 24" Early 2008

Question

I want to connect my Cinema Display 27" to an iMac 24" Early 2008. I recently bought two adapters, one from Mini DisplayPort to DisplayPort and another one from DisplayPort to Mini-DVI. Unfortunately they won't work together. Before I continue buying more adapters I wanted to ask here, if anyone has any experience with this combination and can recommend working adapters to me. Thanks in advance.

Answer 1

I've seen offers on the web for services which will replace one graphics card for another in an iMac. You pay for the hardware and the service, and the service... ain't cheap... because it's not a trivial operation. I would never spend the money to have this done, because there will still be no certainty that things won't go kah-blooey later.
I sympathize. The iMac I'm currently using blew out its logic board two years into its three-year AppleCare warranty. It was replaced at no cost to me, of course, but as you pointed out in the case of your iMac, this was a well-known issue. And if it were to happen now, I'd be SOL because my iMac is now almost a full year out of its warranty.
On the other hand, I've held onto this iMac as my main desktop for a long time, much longer than I have for any computer in the past. 3-4 years is a good long time for a mostly-not-upgradeable all-in-one machine so I won't shed too many tears if that problem repeats (although of course I hope it doesn't). You've gotten three years plus out of your iMac, and while it might be tempting to pay for a repair, it might be better to just yank the resellable components (hard drive, RAM, etc.) and purchase a replacement Mac.
If you decide to go for the repair, you might find a sympathetic ear at your local Apple Store, if you come armed with some evidence that this component commonly fails and remain polite but firm. If you're lucky, they'll do the repair at no cost. Hope for the best, but expect nothing.