KIM-1 repair advice wanted

[Pete Turnbull]

As some of you know, I'm helping with an exhibition of classic machines
in the Department of Computer Science -- for Open Day tomorrow
(Friday), and running conducted tours on Wednesday as well.

Well, one of the supposedly-working exhibits is my KIM-1, but it died
this afternoon.  I can't get it to do more than occasionally display a
single zero, on the leftmost 7-segment display.  A cursory look with a
logic probe (and no docs to hand) shows the clock is running and at
least a few address lines are too.  I bet it's a memory fault.

What are the common faults?  I'm hoping it's one of the 2102 RAMs,
because I stand a chance of having a suitable replacement.  However, I
fear it's more likely a 6530, and I assume they're unobtanium.  Has
anyone ever come up with a kludge to effectively use a 6532 (and are
they any easier to find?) with an EPROM?  Or anything else?

-- 
Pete						Peter Turnbull
						Network Manager
						University of York