25 Apr
2017
25 Apr
'17
9:34 a.m.
On 25/04/2017 15:55, Tapley, Mark via cctalk wrote:
On Apr 25, 2017, at 8:51 AM, allison via cctalk
<cctalk at classiccmp.org> wrote:
Definitely. It takes a while, but even behind window glass (which is
barely transparent to short wavelength UV) EPROMs can eventually lose
their content. It happened to a friend who had a machine with no top
cover, on a desk under a window, after about 5 years. But in direct
sunlight, certainly just hours, and possibly just several tens of
minutes if you're unlucky.
--
Pete
Pete Turnbull
Even after all that I'd still dry it with a
little heat (oven at 180F or a clean empty
container in the sun.
Irrelevant for backplanes, but for circuit boards, would any UV-erasable PROMs want to be
checked to ensure their caps/covers are still in place before exposure to sunlight?