Re: Apple III ram problems

["Stefan Miganowicz" <nrsdpms1@tiac.net>]

I managed to get another keyboard from the dumpster :) and typing on it does
nothing in BASIC and in the system disk, although the lamp lights up.  I
tried two keyboards and they do nothing.  A chip may be fried on the
motherboard.  Anyone know what chip is the keyboard chip?  I tried reseating
everything.



Thanks,
Stefan
Michel & Ann Py <president@whitehouse.gov> wrote in message
37A8FC7C.1618164C@whitehouse.gov">news:37A8FC7C.1618164C@whitehouse.gov...
> The power-on lamp is burned. Replace it with a LED or another lamp if
> you can find one and your problem will go away.
> There is no ram on the motherboard except for the chargen chip.
> Michel
> arn-py at pacbell dot net
>
> Stefan Miganowicz wrote:
> >
> > I was working fooling around with my Apple III.  It was working a couple
of
> > years ago, but the keyboard doesn't work.  I just got another Apple III
for
> > parts, and I took out the keyboard and put onto the one that worked
before.
> > Now it says Diagnostic RAM when I start it.  I swapped out the RAM card
that
> > was connected on the motherboard, and put another one.  It still said
the
> > same thing, so I think a chip is gone on the motherboard.  Before I swap
> > every chip out to find the bad one(I have another motherboard with
corrosion
> > on it),  could someone tell me what chips are the RAM chips on the
> > motherboard.  And a wierd pattern comes up and the manual says it is
> > supposed to tell the bad chip, but all it looks like is a test screen.
> >
> > Thanks,
> > Stefan