[Ti] Dead TI

[H F]

I  have a TI 1gig/1gig that until recently worked perfectly, but now will not start. The power supply is working (switched with my laptop) it has a new battery that has been in it for at least 6 months and all the lights on it show it is fully charged. I've held the power button down for 10 seconds, nothing. Took it to a User Group meeting and they pried the keyboard off to find the reset button...that didn't work.

Is there anything else I can try?