Chosen Solution
Hello everyone, I have an iPhone 4 32 gb At&t. I saw some corrosion around the logic board components, so I put it in Alcohol for 2 days and brushed it well. I also put a new battery and Dock connector since the water sensor on it was red. The phone itself does not power on by pressing power button, however, it turns on when connected to power outlet or pc and reboots consequently. iTunes does not recognize it as well as Redsn0w. Please help me to figure out this problem. Update Hello again, Does anyone have any idea what should I do at this point. I have replaced the broken coil and washed it with alcohol one more time and it still reboots and does not power on with Battery. Your thoughts are appreciated.
I have been able to repair some iPhones by scrubbing with alcohol, but I have never used a soaking method. Usually a 99.9% pure alcohol and a few minutes with a sturdy toothbrush will do the trick. I would try once more to simply scrub the board and see if it will stay on with being pluged into power directly (not to PC). If not then there may be little hope
Kia, yes it looks like that part is broken. It is one of the power inductors and could be the cause for your problems. Of course you do want to make sure that all corrosion is removed and that you phone is clean. The part that is broken is a coil, with an Apple designation of L17_PMU, and the values are 2.2UH-1.5A-98MOHM. Now, you can most certainly try and obtain one from places like Mouser.com or digikey.com. Here is a pretty close match and should work for you. Hope this helps, good luck.
but you also use a very fine soldering iron. You have experience with that? how i can i can ??
