Chosen Solution
Hi guys! When trying to exchange my screen backpanel I cracked the front glass panel. The screen still works fine but there are dark and bright spots on the bottom of it! (See photo) Should I replace only the glass panel now or the LCD screen as well? Best
Does it actually boot and show the Apple logo? If not, you have a bigger issue. Make sure both sides of the LCD cable are plugged in properly. Also make sure the cable is not chipped, or any grey plastic around the connector is missing. Usually this happens when the cable isn’t making a proper connection, so it isn’t lighting all LEDs for the backlight. If there is no issue with the cable, I would try a test LCD. If it is still not working, it will either be a problem with the LCD connector, or one of the LED return resistors on the logic board.
You have just removed the backlight from his original position, what you see in the buttom of the screen is the leds that belongs to backlight. I suppose a professional can fix this issue