Dear HP Enthusiast, i've got a HP-41CV in excellent cosmetic shape and very clicky keyboard that has a signle key which works unreliable. It sometimes works ok end then sometimes has to be pressed very hard to register. I openen the calc and saw the small hole to access the contact. I tried to gently clean it with a thin wire but this doesn't seem to help. Does anybody have a good idea. I don't see anything worng with it. Normally HP-41s have a very good keyboard. Thanks for any help Daniel
HP-41CV Keyboeard Problem
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01-28-2005, 03:27 AM
01-28-2005, 12:21 PM
Try cleaning it again a few times. Place a drop of alcohol on the hole and dip the wire brush in more alcohol. Some keys can be a bit stubborn about being cleaning and need the extra work.
01-28-2005, 03:07 PM
Hi,
01-28-2005, 05:55 PM
Alcohol will work just fine and not cause any problems. I have done this many hundreds of times. It helps to use the 91%+ isopropyl alcohol. Keep it off the display window... it will leave a white stain behind (but this can be polished off). Cutting apart the keyboard is a recipe for disaster. Getting it back together again so that it feels like new is very difficult.
01-28-2005, 05:57 PM
Many thanks for your inputs. I'll try the alcohol way first. and if it doesn't help i'l just drink it ;) I'll let you know my results. Cheers Daniel
02-01-2005, 04:27 PM
Juppie! my HP-41CV is registering every single keystroke after cleaning the contact with isopropyl-alcohol. It was so easy to do and i hope it will continue to work for a good while. Many thanks for your ideas and help. Cheers Daniel |
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