HP 67

[Max Stone]

It's not uncommon for the keys to give problems from slow accumulation of dirt and year's of no use. You can try repeated presses to try recover the contact, otherwise it's a tear-down.

Look out for the red low battery indicator below the screen, right corner. If this light is coming on, blinking, or fading in and out, you've probably got a battery connection issue. What happens when you have the AC charger connected with the battery installed?

Hope you come right.