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Old 11th Mar 2019, 8:12 pm   #4
G6Tanuki
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Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,953
Default Re: Keyboard and computer circuit board cleaning

In times-past I dunked many Lear-Siegler ADM3A and |D|I|G|I|T|A|L| VT131 keyboards (that spent their lives at what was euphemistically-called a "Water-treatment plant" but everyone locally knew as the sewage-works) in a bath of deionised-water-and-commercial-detergent.

Swish them around for a day or so, re-wash several times with deionised water, stick them somewhere hot-and-30-Centigrade for a few days, and they usually recovered. Often this revealed that the reason the keycap-lettering had not been visible (the reason for the service-call) was not because it was covered by 'biological deposits' but because the said biological deposits had digested the text from the keycaps.

In later times it was distinctly more-profitable and much faster to summarily hurl the contaminated keyboard into the trash and supply a new one.
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