torch 9800 dead?

Hello everyone,

i have a blackberry torch 9800 which is not turning on at all, whatever i tried.
I tried a battery pull, plugged it in on the wall to charge, plugged it in the laptop, nothing works!
It shows no red led and its not recognized by any computer. changed the battery, no reaction.
the phone does not have warranty so i want to try to fix this myself.
if anyone have a solution please let me know :)

thanks.

It sounds dead but it would be helpful to know if there was an event (drop, water, left in hot car, etc...) that preceded it not working.