This video show how i replace the power plug on the N70.
1. Remove the covers from the bottom, force open the clip with yr nails
2. Remove the top cover using flat screw driver, not to hard, until you hear click.
3. Remove the screws, the slowly lift up the set, leaving the front of the phone on the table. Careful, dont lift up everything else all might fall off.
4. remove the broken power plug from the housing, might need help from the screw driver.
5. Then, put in a new one, and put everything back again. Cheers