On Wed, 18 Feb 2004 at 22:40:48, James Hunkins wrote:
(ref: <[EMAIL PROTECTED]>)
>
>Cleaning with an erasure, especially a pencil type (versus ink) can
>leave a different residue and doesn't always take away the material
>very well. It is best to use an actual electrical contact cleaner,
>usually found available in spray cans. Most electronic suppliers cell
>it or, if desperate, Radio Shack here in the states usually caries it.
>
>The other issue that I have seen has to do with contact 'mismatch'. If
>you have tin plated type contacts (silver colored), it is best to use
>this on both the memory and the connector. Gold plated should also be
>mated with the same. This helps avoid some additional reaction that
>may happen.
>
>By the way, a vertical stripe pattern would indicate to me (assuming
>that the video uses the system memory for the frame buffer) that there
>is most likely an address bit that is not making good contact. I
>suspect that the real contact cleaner may help this, since reseating
>the memory seems to help.
Tim does not have gold from what I remember.
These mem chips have the same legs patterns as Gold Card and SGC chips.
The prototype board we had from Peter had soldered in chips.
What does current production do?
The legs can tend to shorten - the pins should not have 90 degree bends.
Some pins may not push into the sockets far enough.
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