Sometimes the actual repair is very simple – it’s all about knowing where to look. iPhone 8 Plus with a dead rear camera. Step 1 is to test the phone with a known good camera and as little plugged in as possible. Problem was definitely on the motherboard.
The camera connectors were flawless, however measuring at the connector I determined PP_CAM_VCM_PVDD_CONN was short to ground. Turns out a capacitor on the rear side of the phone was visibly blown out. Remove, replace, and camera works again!
If you need your camera repaired, or any other motherboard work please contact me https://hiphonerepair.com/contact/