Chosen Solution
Hello everyone, I replaced the screen digitizer on Ipad 4th gen. I turned off the ipad before starting the repair. After completing the repair I turned on the device and the right half of the screen is darker. The iPad was completely off the whole repair. So cleaned the LCD ribbon cable and put it back together. The right half is still dark. I figured maybe I got it too hot when I was removing the original screen digitizer to replace and now the LCD is damaged. So I ordered a LCD. When it came I put it on but I still have a dark right side. Any ideas or help would be greatly appreciated!!! Thanks!
Did you isolate the battery from the logic board? Unfortunately they don’t show this in the iPad 4 guide but here’s an example from the iPad Air guide - step 35. Not doing this increases your risk of damaging the backlight circuit on the logic board. The backlight circuit consists of a right side/left side design so if you are missing the right side, you probably have a blown filter (L2210). There could also be more damage to the rest of the circuitry. This is not a DIY repair and requires micro-soldering. I would look for a reputable repair shop that does micro-soldering repairs.
