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I’m looking for a source for a 24" Late 2007 iMac screen. Mine has a yellow tint to the whole display.

What you are looking for is this: 24" LCD Assembly - Apple P/N 661-4685. Follow this IFIXIT guide to Step12: iMac Intel 24" EMC 2134 and 2211 Hard Drive Replacement as we don’t have an explicit guide for the display.