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Iphone 7 Plus “Both” Cameras and Flash not working. Customer said that it had previous water damage, took it to a shop for ultrasonic cleaning and it has been good for months… no issues till he tried using camera the other day and discovered both were not working. No visible signs of why… FPC Diode readings okay… anyone else experience this and what you did to resolve? Thank you
Hey Michael, good to have you back! Hmmm…water damage…you know what I say in regards to latent issues :>). I once had a similar water damage situation on a 6S Plus where everything probed okay but still didn’t work, despite replacing the LDO’s etc. It drove me nuts until I realized that the the VCC_MAIN wasn’t fully connected between the RCAM LDO and the rest of the VCC_MAIN. When I probed it in diode mode, I got a similar reading (I didn’t notice the slight discrepancy at first) but what I was reading on the VCC_MAIN pin of the LDO was actually the other downstream FCAM LDO and the values were almost the same. When I finally realized this, I tested the continuity between the RCAM LDO VCC_MAIN pin and the rest of VCC_MAIN and sure enough, they weren’t connected. The inner trace had probably blown due to the water damage. The circuitry is a little different on the 7 series so you’ll have to dig around but make sure that there is actual 4.2V at the input of the LDO.
