Thinking key/button failure, but a question ... Do you really have to connect it to the charger to make it power on? When it won't turn on, if you simply remove the battery and replace after half a minute, won't it boot up?
EDIT: I looked at OP again and see, first sentence, it seems the answer is that simply inserting the battery does not work.
Some other thoughts: Is the battery tight in the compartment, and contacts are being pressed against each other? What do the contacts on both the battery and the blackberry look like? Are they clean and more or less shiny, or dark and dirty looking?
Last edited by aiharkness : 04-08-2010 at 07:53 AM.