Re: Cleaning a HP 48GX: Can I dip it in a solvent to clean? Message #7 Posted by don wallace on 3 Oct 2005, 2:47 a.m., in response to message #1 by David
Hi David,
I would (very strongly) advise against a "bath" in anything!
At some risk to the feel of the keys on some hp calcs
(e.g. 41) you can use CRC brand "Contact Cleaner" in minimal amounts.
It is very gentle but used on the older hp calcs like the 41 the keys lose their tactile feedback quality when the spray is applied.
As the plastic components "dry out" (rapidly!) some of this tactile feedback characteristic recovers. At least the keys then operate!
They feel a little spongy, though and don't make a clicking sound.
A small price to pay for a functional keyboard.
Never use any detergents at all (!). If you want to run a small
*risk and use ultrasonic cleaning in a fluid (I don't have access to such exotic stuff!) the only liquid to use is isopropyl alcohol.
Distilled water sounds okay, but metal can be induced to oxidize.
At least isopropanol is as inert as you are going to get.
*If liquid permeates between the LCD interconnects to a PCB, then often you will lose the display (connections).
For What Its Worth...
DW
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