Will what work? My kingdom for a link!
The iMac G5 supported Mini-VGA, not mini-DVI.
And without a hack, it could only mirror the contents of the internal display.
Be absolutely sure it is an iMac G5 you have, and not an Intel.
The early Intel's looked identical to the G5s on the outside. The only difference, the EMC# on the foot (To tell if they are Intel, they will have an EMC# on the base which is enumerated 2104, 2105, 2110, 2114, 2118, 2111, 2133, or 2134), and the mini-DVI port is the video port for the Intel.
I am sure I have a G5 PowerPC not an Intel. I have an old version of photoshop that only works on PowerPC on the G5. It has a Mini-VGA port (I've tried a Mini-DVI cable, did not work) but I found this cable:
I'm hoping that if get one of these that it will not mirror the black screen, but the proper display.
I know it's old but I have programs that don't work on new macs.
Time to get a new Mac!
Run your PowerPC applications in Snow Leopard (with Rosetta) installed into Parallels in Mt. Lion:
[click on image to enlarge]
I think I might just stop trying and just buy them on my MacBook Pro, but thanks for your fast replies, but I have one last question, can capacitors leak even when a computer isn't in use for a couple of years? Because I have never seen the inside of my iMac G5 and I have always wondered if it was capacitors.
Yes. Also they could have been starting to leak when it was last used and failed over time.
I purchased the complete inventory of iMac G5's from an American affiliate of a foreign company that decided to close its domestic offices. All of them failed over time and most of them from bad capacitors (maybe my nephew is still using one of them!). I was lucky that in 2009/2010 the local Genius Bar looked kindly at me and replaced these for free. I doubt that Apple even carries these motherboards anymore...
After repair for bad capacitors most failed for other reasons.