i need help powering up hp48sx

[ross denys]

i have a 48sx that sat in my briefcase forever. i used it very little and changed the batterries on a regular basis. one day it wouldn't power up. i have tried reseting it with a paper clip under the upper rubber foot. i've tried leaving te batterries out for days to eliminate the static.no luck. can anyone help me.thankyou for your interest

[Namir]

Have you tried to connect the terminals (while the batteries are removed) with a papeer clip to possibly discharge any static build up?

[Raymond Del Tondo]

A small but important addendum:

NEVER put in the batteries with wrong polarity,

unless you want to take the risk destroying the zener diode.

This topic has been discussed before several times.

[Randy]

Try this: Press lightly on the rasised part of the bezel above and between the B and C keys in the top row. While maintaining the pressure, try turning it on.

If it turns on, the problem is a loss of contact between the logic board and keyboard due to shrinkage of a foam pad.