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