[cctalk] VAX 4000 console SLU in need of some TLC

I have a VAX 4000 with a console SLU that has been host to a battery for far too long. I removed the battery some time ago and cleaned things up with vinegar and IPA. Then I had PSU issues, which I've resolved by swapping for a NOS one (thanks Witchy!). Last Wednesday (13-MAR-2024) it booted to the dead sergeant prompt for the first time in a decade or two (I would guess). It was set to 19200 baud and the console 7-segment LED was a bit the worse for wear, but it responded to the VT420 quite happily. But tonight, although it seemed to power up OK, the console was unresponsive. Shining a light into the MMJ socket showed pin 2 is missing (2nd from the left looking into the socket (https://allpinouts.org/pinouts/connectors/serial/dec-mmj-serial/). The rest show patches of the sort of green you would expect from something that has been near a leaky battery for some time. Now I have some console SLUs for the KA650 (uVAX 3600) which have also generously hosted batteries for longer than they should, but I suppose if one of those has an OK looking socket I can try a swap. Otherwise, does anyone have any ideas for a source? I know I could solder to the six pins at the back and make an adapter, but that is I think would be a stop gap 9or a last resort if no parts are available. Pin 2 is TXD+ so I suppose that the RX side still works. I have no suitable storage for this system (well, I have some RF71 drives but not the carriers that would be needed to connect to the backplane properly), so I was planning to netboot from a SIMH instance on a PC. However, to configure that I would need the ethernet MAC address, and I can't think of a simple way to get that. unless someone knows whether the ethernet ID prom is readable in something like a TL866II Plus? Anyway, thanks in advance for any suggestions or ideas. Antonio -- Antonio Carlini antonio(a)acarlini.com