Reseating QFP-socketed chips

From: Dwight K. Elvey <>
Date: Tue Dec 7 12:42:00 2004

>From: "Jules Richardson" <>
>Anyone else find that QFP-socketed chips in late 80's / early 90's
>equipment are *really* prone to corroding and needing re-seating?
>I've just had to re-seat several on this NCR Tower which were the cause
>of all sorts of problems - yet I don't normally find that DIL chips need
>any re-seating on equipment of this sort of age.
>(I *think* QFP's the proper name - commonly used for 80186 / 80188 /
>80286 chips, which have flat leads underneath the device)
>Anyway, I now have a working NCR machine that chucks out more heat than
>a small furnace and makes the lights go dim :-) (well, almost!)

 As usual, I will note here the virtues of using DC#4
silicon grease on the contacts to improve conductivity
and hold off corrosion.
Received on Tue Dec 07 2004 - 12:42:00 GMT

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