I've just had gotten another replacement logic board for my 2009 25.1" iMac. I press the power button and I hear the...

Hi gang, I've been on the road towards rehabbing my Late 2009 iMac. I've replace the power supply (because the old one was...

Okay, this will make no sense, but God finally fixed my iMac. The diagnostic LEDs in my case were completely useless in my case. When the external screen was finally working, only light 1 and 2 were lit. For a few times, when only the LCD screen was attached, all 3 LEDs were lit, but I had no video. The turning point happened when I moved two of my RAM chips from the back slots to the front slots. (I didn't bother using all 4 ram chips at the time.) Just for giggles, I tried to reset the PRAM with just the external monitor attached, and it strangely worked. On top of that, I got a picture. The iMac booted like normal. Then I shut it down to try with both monitors. It worked! But this time around, it booted to the emergency partition. I ran Disk Utility just in case, and restarted. It booted normally again. Both screens were mirroring. Then I started to put in the screws to secure the LCD screen to the frame, and it died. At that point, I feared that I might had fried my latest logic board. I took the LCD...