help me please

my bb 7100g wont turn on and theres no red light or anything!
i bought a new battery for it, and when i inserted the battery, it showed a white screen with error 507 so i reloaded the OS.
after that, i went and plugged it in the wall charger. it was charging for,like, 10 - 15 minutes when suddenly, it turned off! with no warning or anything.
i removed it from the charer, removed the battery, put it back, and no red light appeared.
i removed the battery overnight when i tried it again this morning, still nothing.
whats wrong?
please help

Wirelessly posted (8820)

They don't live forever.

I think they expire after a certain time period:p Kinda like milk.
LOL

Wirelessly posted (8820)

I don't know what it is with the 7100's. I still see the older BB's and think they will last forever. My 8700 is still going after having hit the pavement more than once or twice so far. But the radio quit on my 7100t after a couple years. A buddy got a warranty exchange two times or so on his 7100t for different reasons. But anyway, all of them have some finite life span. Something is eventually going to wear out. I think with the 7100's it's sooner rather than later. Just my thoughts.

i had it checked and they said it shorted..probably internal short circuit. i dont know what could have caused it. it was never in a humid place, placed in hot places, never got wet...

i guess a part just wore out...