Capacitors around PMIC shorted
Hi there, I have a water damaged iPhone 5s for repair. The phone is totally dead. After opened it, I found corrosions around U3 display chip. I removed the U3 chip, and found the pads under the chip are quite bad. I cleaned them, then soldered a new U3 chip. Tested the phone, the phone turned on perfectly fine, tested all the features of the phone, all working perfectly. After about 10 minutes, the phone suddenly turned off without any warning. Then again no signs of life.
I had to again open the phone, this time I found almost every capacitors around PMIC are shorted. These capacitors are in different lines, all shorted! It made me feel that the PMIC is probably bad. I removed the PMIC, cleaned the phone. The short is still there. Almost every caps around PMIC are shorted.
Could it be the CPU? The components around the CPU look clean. Any help would be highly appreciated.
Is this a good question?