iMac G5 external monitor

Hi there!

I'm currently working on a project, and I really need some help from you guys.

What I'm basically trying to do is putting a Raspberry Pi with Retropie installed into a iMac G5 case (24'') and use it as a Retro-Gaming-Machine.

Things I already have:
- iMac G5 24inch
- Raspberry Pi Model B+ with RetroPie installed
- 2 SNES Controller with an Adapter to USB
- Cables and stuff

And now to my problem:
I want to use the iMac's LCD panel (Product number: LM240WU2), which of course requires an inverter as well as a controller board.
The inverter is stuck to the panel, and can be used I think. But the controller board seems to be integrated into the Logic Board, so I can't use it.
I already found a suiting controller on AliExpress, but unfortunately it's not available. So I'm kind of running out of options where to get one.

Does anybody know where to get a working controller? It shouldn't be too expensive, because otherwise I could just buy a 17'' or 20'' iMac G5 and use it, because these are built a bit differently and work just over DVI.

I would love to make a Instructable out of the project, in case I'm able to solve that Problem!

Thanks,
Nick

Picture of iMac G5 external monitor

Much like any laptop screen it's no good without it's controller that's built onto the computer's main board. Chances are you won't be able to get your hands on a suitable controller. If you do find one they tend to cost nearly as much as a new monitor would. It's best to get a new display and go from here.