I replaced the LED Driver Board on my iMac 27 mid 2010

Mi Problema

The backlight turned itself off every 5 seconds when the brightness was above level 3. (16 is full brightness). Needless to say I got fed by all the squinting I did at my screen just to see what was going on.

I sent my iMac to 2 different repair shops, but unfortunately without getting it fixed (amateurs)

I then searched around the web and stumbled upon IFIXIT and the repair guides.

It was obvious to me that the LED Driver Board had to be changed.

Mi Solución

I skipped steps 7 to 9 because I managed to replace the LED Driver Board without removing the LCD screen completely. I placed a small cardboard box upright between the screen and the outer case while repairing the machine, but I had to be careful because the screen was still connected to the logic board among other things, with rather short cables.

The repair was a success and I'm very happy I did it.

Mi Consejo

You can skip steps 7 to 9 if you are careful.