Chosen Solution
I have an iPhone 6 plus with water damage, it pulls .5A (it drops to .01 every few seconds then back up) but doesn’t boot. I cleaned the board and checked for shorts and found nothing. I’m fairly new to board level repairs, so I’m mainly looking for what steps I should take from this point to narrow down the fault
First thing I would do is check for any components that look out of sorts. Where did the liquid go? Does anything LOOK damaged. With any sort of known damage, your eyes are going to be your best clues. Even if you can’t see anything amiss, the areas where the liquid went are probably where you’re going to find fault. Even with a good ultrasonic cleaner, corrosion under chips isn’t necessarily going to get cleaned up. I don’t think Tigris, or elements of the charging mechanism are a bad idea, assuming there was corrosion there.
hello Lenny, a similar pulsating behaviorism is a symptom of a faulty main charger and its switching transistor. If you plan to fix it yourself, these two ics should be replaced. It looks like a reverse polarity connected current to me, as if someone made a mistake when trying to repair. It happens sometimes. If you prefer to have such a repair done, find a good repair shop, remove the motherboard and bring it back. Order replacement of the TI SN2400B0, DRV2604YZF and CSD68815W15 transistor. The components cost half a dollar each and soldering these little ones shouldn’t be too expensive either. However, this does not exclude other post-flooding problems that will also need to be resolved. t
