7 Dec
2004
7 Dec
'04
4:42 a.m.
From: "Jules Richardson"
<julesrichardsonuk(a)yahoo.co.uk>
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!)
cheers
Jules
Hi
As usual, I will note here the virtues of using DC#4
silicon grease on the contacts to improve conductivity
and hold off corrosion.
Dwight