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TPS65217: TPS65217 output issue

Part Number: TPS65217

I am using TPS65217C on my board and I have used the Beagle bone black as my reference. I am using Li-Ion battery to power the system and will get charged simultaneously. To increase the efficiency I changed the UVLO to 2.73V and maximum charging limit to 4.2V through I2C interface. I changed the LS2/LDO4 output range to 2.8V.

I have connected a 5V supply to AC pin of the PMIC the voltage across SYS1 & SYS2 pins is 0.15V. When BAT is connected then the voltage across SYS1 & SYS2 pins is 3.77V.  But LDO4 output is 0V and capacitor C15 is shorted. Is there a way to bring it back or is it dead? Would replacing TPS65217 fix the problem? 

I would really appreciate your help.

Thank you.