VAX ODT console fault

[Glen Slick]

On Wed, Jun 12, 2019, 5:13 AM r.stricklin via cctalk <cctalk at classiccmp.org>
wrote:

>
> On Jun 12, 2019, at 1:25 AM, r.stricklin wrote:
>
> > I have a BA23 VAX of unknown provenance, which tonight I moved from the
> project backlog to the workbench. It comes up and passes selftest. But any
> key I press on the console terminal is repeated a couple dozen times (to
> the limit of the input line length?). This makes it impossible to interact
> with ODT.
>
> If I install a spare KA630-A and 8 MB memory board, I get a similar fault
> where chevrons repeat to infinity. This seems to suggest it's a fault
> between the CPU and my terminal. Can this be the result of a bulkhead or
> other cable problem?
>
> KA630-A.V1.3
>
> Performing normal system tests.
>
>   7..6..5..4..3..
>
> Tests completed.
>
>
> Loading system software.
>
>   2..
> ?40 NOSUCHDEV
> ?06 HLT INST
>     PC = 00000EE6
> Failure.
> >>> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> (etc.)
>
>
>
> ok
> bear.
>
> --
> until further notice
>


Is the NVRAM battery still in place in the console bulkhead panel? Those
always go bad and leak over time. Even it was removed some time ago my
first guess would be battery corrosion on the bulkhead panel is causing the
problem if it happens with multiple CPU boards.