From: Phil Beesley <[EMAIL PROTECTED]> Date: Sun, 20 Jun 2004 14:13:51 +0100
On 20 Jun 2004, at 09:43, Hal <[EMAIL PROTECTED]> wrote:
Works great for keyboards too. I've resurrected a couple //gs ADB =20 keyboards this way...
Cleaning keyboards with water will *only* work for older keyboards with mechanical switches. Most ADB keyboards have mechanical switches but there are some exceptions so check before dumping a keyboard into a bucket of soapy water.
In my experience, trying to repair/clean membrane based keyboards is unlikely to be successful. Following an accident at work, a colleague stripped and cleaned a dozen membrane based keyboards (Cherry brand for PCs) using distilled water and alcohol. The things took ages to dry and only one fully worked.
I just wanted to mention that I concur with Phil on this. My experiences are similar.
Older keyboards are built out of a bunch of separate key switches and they are tolerant of a fair bit of water when cleaning.
Membrane keyboards are basically three layers of mylar with conductive traces on two of the layers and holes for each key point on the middle layer. Once you get water between the layers, the thing never dries. You can unfold/separate the layers to let them dry but for some reason this doesn't work well either. I don't know if those membrane keyboards are sensitive to mineral or grease deposits or if they require precision assembly, but getting them to work again after cleaning is usually a futile exercise.
Jeff Walther
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