…The iPhone 6 that we had showed signs of life but no display. After replacing the screen with a new one, it still showed no signs of an image. When inspecting the screen in front of a flashlight, a faint image was visible. This confirmed that the phone was on and in fact worked, but had a blown back light. For this type of repair it would require micro soldering. After checking the filters on the motherboard we found them to have continuity and functioned within specifications. At this point in the back light circuit we still had a back light display BGA IC (ball grid array integrated circuit) as well as a coil and a diode. After checking the coil, which was also found to be within specifications, we then looked to the diode. Below is the picture of the diode under the cpu heatsink.
If you have an iPhone that has no backlight this can often be the result of an improper screen replacement or previous work done on the iPhone motherboard can cause the back light to suddenly go out. Liquid damage can also cause no back lights on an iPhone.
If you are local to the Burlington repair shop you can simply stop by during our business hours and we will get the repair started. If you plan to send in your iPhone to get repair that’s great! The process to send in your iPhone with no back light is simple, start a ticket on our Send-In-Repair Page we will update you once the device is received, and then once again when the device is mailed back to you with a tracking number. This service typically takes 1-2 business days either by send in or local repairs. keep in mind this does not include return shipping transit times. We also offer expedited repairs if needed.Read More