Water damaged iPhone 5S doesn't power on charges at 0.33amps follow up
Hello there, I recently purchased this water damaged iPhone 5S.
Upon receiving it, I immediately took it apart, and got as much water as I could off it, brushed the connectors, I attempted on removing the EMI shields but failed to remove it, so I didn’t proceed on. I tried to turn it on but received nothing. I checked if the screen on it was working by connecting it to a different working iPhone, and it indeed worked, I do not know about the battery, so I decided to put a working battery to see what would happen. Still nothing, even connecting it on a charger for several hours, nothing. I decided to put this amp meter. This device where you plug the device in to a USB wall plug and connect the lightning USB cable to it then to the iPhone. As soon as I done that, I saw a reading of 0.33 amps and 5 volts. What could this mean?
UPDATE: I have purchased isopropyl alcohol 99.9%, I used it on the logic board but EMI shields were still intact to the phone as I was scared to remove them. First try putting the alcohol in for 5 minutes, brushing the connectors with alcohol and rinsing the board with water for less than 5 seconds, letting it out to dry until more than 24 hours, it didn't work. 2nd try after doing all of that, when I connected a different working test battery, I started hearing sizziling sounds, and the amp showed 0.08 and not 0.32. I was scared so I removed the battery and just waited, connecting the battery again, as soon as i did it, the phone started constantly vibrating for no reason whatsoever. The 3rd time I did it, nothing happened really, it just stayed art 0.32 amps, please help me.
The A7 chip is overheating really badly, anything I should do? I have sued isopropyl alcohol but that didn't do the job unfortunately :( This only occurs when iPhone is connected to the battery but not with the charger.
Please help me, this is a follow up from my previous post 3 weeks ago, unfortunately, after updating the people who were trying to help me, no one responded.