Re: HP 25 malfunctioning keys Message #3 Posted by David Smith on 7 Jan 2004, 1:10 p.m., in response to message #2 by Jim Creybohm
The HP25 keyboards are different than the classics... no key strips to clean under. Most styles of the HP25 keyboard do have a hole in the circuit board under each key. You can clean the keys with a small brush made out of three stands of wire brush bristles chucked in a pin vise, twisted together, and trimmed square. Dip in 91% isopropyl alcohol, place a drop of alcohol in the offending hole, and lightly "scritch" away in the hole.
If your keyboard does not have the holes, you can carefully drill an access hole with a pin drill. Avoid drilling into the circuit traces on the back of the keyboard. Also avoid letting drill shavings into the hole.
|