Xperia z water damage

So,i just put the phone in the pool not my first time,and after 2 minutes the screen started flickering and then went black,i cannot turn it on,when i connect it to a charger the phone shows only red light,after 5 seconds vibrates 3 times and then repeats.I disassembled the phone and took everything out expect the screen, and left it for 2-3 hours.Now the phone is recognized in the computer but it only turns on when its on charger,and it turns on for 30 seconds it shows the sony logo and then it goes black again with red light on.I think that the screen have water inside,is it a screen problem or? Any suggestions?