S6 after water damage. Interested behavior, need an advise.

I have s6 after water damage, it was dropped in the water for 1 sec. Now it's working only when plugged in with AC charger.

It's fully operable if plugged in AC charger(indicator of the battery goes up to 97% percent and I'm able to power on cell phone and use all features e.g. calling camera etc)

It's not working if it's plugged in pc usb port or not samsung compatible charger(data+ and data- not circuit).

What can be a problem in that case? Should I start from replacing daughter board?