Treo 750 Dead! - Palm Treo 750

Hi guys, today my Treo doesn't like to start.
I've a WM5 spanish Treo and yesterday i made a hard reset and leave it only with Yahoo Go!.
Today:
- the screen was black all the time.
- after a soft reset the device hangs in "Palm" screen
- after a hard reset the same thing.
(I'm tried all without any miniSD inserted)
The last thing: when connected to charge (not USB, direct from power), no green light appear...
Any suggestion?
Thanks in advance...

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