Chosen Solution
Hi: While replacing a defective display (still had a working back-light) the back-light stopped working. The new screen did not resolve the issue. I am hoping to find a solution to get the back-light up & running again, it does not appear to be a screen issue, I can see the display a little using a flashlight. I have an SMD solder rework station if that is helpful. I should also mention I thought I killed the phone due to a slightly long screw placed incorrectly near the display connectors. Could this still have caused the back-light issue? Thanks!
If you had long screw damage it would affect the image not the backlight. More than likely you have nudged a filter near the FPC. You will need a multimeter and the backlight diagram to work out what component on the backlight circuit is bad.
After careful examination of iPhone 6 motherboard pictures (at the display connectors) I believe I see where a component was knocked off of my motherboard (see picture pointing out missing picture). Using a video as a guide I see approximately 0.5 ohms at the right pad of the missing component to ground. This reading is not found at the connector. Continuity exists between the end/bottom pin of the connector and the left pad of the missing component. Should that component be a resistor or coil? I believe the part designation is FL2024
