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Got an iPhone 6s with some water damage. Managed to get back everything to working order except for back camera. Since it was missing PP2V85 I removed U3200 which had suffered a short with VccMain.
Unfortunately CAM_EXT_LDO_EN seems to be missing too, although the pin is shiny and undamaged.
Does CAM_EXT_LDO_EN show up only when camera cable is connected or should I just say goodbye to the main camera ?
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Hey Arbaman, what do you mean exactly when you say "CAM_EXT_LDO_EN seems to be missing too"? Do you mean the signal or something physical?
I don't remember probing that before but looking at the schematic, it is connected to a UART RTS (Request To Send) pin on the CPU (maybe they ran out of GPIO's!?). Normally, an RTS will go high to initiate a conversation so that's probably what they do here as well; RTS goes high and enables U3200. If you not seeing a signal, you could always pull it high via PP1V8 (or use a DCPS) to see if that enables the camera.
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@refectio Hey Minho, sorry for my lack of precision but I'm pretty new to iPhone repair attempts..would need some training..lol
Anyway you read my mind, I referred to the missing CAM_EXT_LDO_EN signal which should be enabling U3200 and create the needed 2,85v missing right now.
I will try to run a 1,8v bridge and see if that does the trick..thanks for help for now
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