Display Backlight won't dim after HDD replaced. Brightness near 100%
I put an SSD in my Early 2009 iMac 24" after the old HDD failed. I don't recall damaging anything during the repair, but now I've got a problem with my display.
The backlight doesn't want to dim. Lowering the brightness all the way only dims the display slightly, so 0% looks more like 95%.
Resetting the SMC and the NVRAM didn't help, and I can't find any solutions online.
My parents are the primary users of this computer, and their elderly eyes are having a pretty hard time. It's very straining on the eyes, especially with black text on a white screen.
I'm hoping that I can figure this out so I can make this computer easier for my parents to use. I know it's an older machine, but it's still a great computer. Plus the SSD has given it a new lease on life.
Any help would be greatly appreciated!
Last 3 of the serial number: 259