Chosen Solution

(Für alle Deutsch sprechenden, ihr könnt mir gerne auf Deutsch antworten.) My smartphone has water damage and now it is not getting on any more. How do I change the circuit board so my phone works again? Or what or how do you, as Community, mean should I repair my phone? I sent it already to a serious repair station for Sony but only to fix the water damage. After 1 week they called me on my phone and they told me that they can´t fix it and I should change the circuit board. What happened? In short: I held my phone for 20 seconds in the sea water to take a photo! But I think that is not so important for “to change the circuit board”. By the way: for all German speakers you can write me also a message in German!

@helpmejojo sony no longer has any schematics for their cellphones. The only thing you can do in your case is try to replace the motherboard. Start with this guide. After that use these:

If at anytime you should get stuck with this, post some images of your issues with your question . That will allow us the see what you see. Use this guide for that.