Trying to get my old HP 65 in full working condition. It's been stored away a number of years. I've cleaned out the battery compartment and ordered new Ni-Cd batteries to restore the battery pack. I have also opened up the case and checked the Card Reader. One of the screws attaching the motor to the chassie was completely loose and the other partially loose. I reattached these. Now the problem: When inserting a card nothing happens - the motor doesn't run and the display flash "0.00" and gets dark. Pressing "Clx" resets this. What would the next step be in order to fix the Read Reader? I know that the Reader worked before putting the calculator in storage a number of years ago.
{moderator repost}