Chosen Solution
Hye I got an IPhone 6 sent in to me regarding VCC_Main Short. No water damaged attempted on this IPhone. After removing the PMIC I got no shorted to ground on VCC_Main. But the problem is, I screw up the two pads D21 & C21. According to ZXW Tools it showing 45_Buck5_FB (C21) & BUTTON_TO_AP_MENU_KEYL (D21) . I dont know what those line do. So my question is, is it okay if I just solder the PMIC without making a jumper on the pads that I mentioned above ??
45_Buck5_FB - This is a feedback line that tells the PMIC that Buck5 (Buck Regulator #5) is producing the proper voltage. Buck 5 produces P0V95_FIXED_SOC which is a 0.95V fixed supply line for the System on Chip (the CPU/GPU). BUTTON_TO_AP_MENU_KEY_L - This means (Home) Button to Application Processor, Menu Key Active Low In my opinion, both of these lines are important and you will have to jumper them to insure proper functioning of the Home Button and regulation of P0V95_FIXED_SOC.
A vccmain short is never going to be due to the PMIC in an iPhone 6 with no water damage. Taking off the PMIC is a really aggressive thing to do in an iPhone 6—it is not a failure point unless water went under it. Just want to make that clear for anyone reading this post in the future.
