Hi
Unfortunately this one sounds like water damage;-{
The best thing you can do here is act fast!
Here’s some steps
1)if possible turn off and disassemble the device by following this video
[link|https://m.youtube.com/watch?v=uPFoKEKoT_k|https://m.youtube.com/watch?v=uPFoKEKoT_k|new_window=true]
2)look for any corrosion or blown components (corrosion usually looks like white blue or green stuff)
3)if any corrosion is found clean it away with isopropyl alcohol and some qtips/cotton buds
I would also pay close attention to the aux and charging ports and make sure they are clean
Hopefully this helps
Any questions please ask
Thanks:-)