1/3 of Display is dim... Which part to check/replace?
I have a 2007 Aluminum iMac with a display that dimmed in the upper 1/3 of the screen (suddenly, a year or so ago). I would guess it's about 20% dimmer and gradually gets to full brightness in the bottom 2/3.
I was just about to buy an eBay LCD and follow these awesome iFixit instructions when I saw that there might be other causes to this...
So my question is: What is the easiest way to diagnose this issue? I've read here that it could be the inverter, the CCFL in the LCD, or even a loose wire. Has anyone else had this issue and gone through with a repair? If so, what ended up being the cause?
If it was the LCD, could I replace it with one from a 2009 iMac?
I was also planning to upgrade the HD so I'm looking forward to taking this thing apart... but hopefully as few times as possible!
Thank you in advance for your ideas!
Is this a good question?