16 Jul
2011
16 Jul
'11
10:58 a.m.
You may (or may not) be interested in some issues
I've had with my
Commodore PET. It's certainly educated me about the vunerablility of old
sockets.
It may sounds crazy, but when I have something rare as a PET and want to keep it WORKING for a long time, I usually change
**all** sockets and put
sockets on socketless ICs. Of course, with proper dessoldering tool :)
I would certainly replace all the sockets with turned-pin ones, but I
don't think I'd desolder ICs just ot put them in sockets. But if I had to
replace an IC,I might well socket the repalcemetn (again in a turned-pin
socket).
As an aside, the Whitechapel MG1 was a bit silly. The expensive chips --
the 32016 procssor, MMU, FPU, etc were all in nice turned=pin sockets.
The EPROMs were in very cheap IC sockets. You cna guess the result,
problems due to bad contacts at the EPROM sockets were common. I replaced
the sockets in mine with turned-pin ones and nevr hand another problem.
-tony