iPod Touch won't turn on or respond at all

forget about voiding the warranty - that warranty is gone since the first raindrop hit the fluid indicator.

the only thing you could try is to disassemble the ipod and check the logic board for fluid residue (white/greenish stuff)

if you have a multimeter, measure the battery - if it has less than 3v - the ipod will not be charged or start

use the logic board guide when you open the ipod.

another thing about fluid damages - it can take month until something blows up.

had one on my table a few days ago (beautiful 32gb version) - they told mthat there was an incident with beer, i tiold them to bring it in - but not - it was working - until a week ago.

now it's simply toasted

so don't hesitate and open it.

if you find fluid residue - clean it with isopropyl alcohol (>90%) and a soft paintbrush - don't forget the connectors!