|Re: HP 48 GX|
Message #5 Posted by Ron on 15 June 2007, 9:27 a.m.,
in response to message #1 by Emily Lane
Yes, you can take it apart; but for a sticky keypad, a good cleaning in distilled water is probably what it really needs.
With batteries removed, submerge it in DISTILLED water, in a GLASS dish. Push each key several times. Let it soak a while, then take it out. With the calc face down, press all the keys several times to get rid of the now dirty water. Repeat the whole process with a new bowl of distilled water. Then, let it dry THOROUGHLY before installing batteries. I let mine dry about three days in a warm dry place. Over my heater vent in winter was a good place.
I've done this, as have several other people here. If this doesn't work, then you can take it apart. After you get it apart, it seems like the keypad is heatstaked to the frame; I can't remember, but someone else here will.