Re: HP 9821 - display and tape transport issues #VintageHPComputers

Dave McGuire

On 2/3/20 10:17 AM, Achim Buerger wrote:
That's interesting, since just a few days ago I pulled a TI RAM chip
from 1977 out of a socket and two of the leads simply fell off. And all
are very dark, nearly black. I thought they might be silver plated, but
that doesn't explain the desintegration of the leads without excessive
That's exactly what we've seen at LSSM. I do not know the chemistry
of that effect.


Dave McGuire, AK4HZ
New Kensington, PA

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