I had a 20” Dell monitor for several years on three generations of Mac. It finally cooked its analog board. I took it apart to find the fault, and it turned out to be, as the Apple store geniuses say, beyond economical repair.
Later, I found a 20” iMac for $20 at a thrift store. Turned out to be a dead logic board, also not worth fixing, but I got more than my money’s worth in parts out of it.
While I had both devices taken apart, I noticed that the LCD panels are identical. Apple and Dell used the same supplier several years ago, and possibly still do.
Interesting, thanks!
Ed