On Sun, 06 Mar 2016 13:28:52 -0500, legg wrote:

When you've got this thing plugged in and running, what is visible in
the display? Can you get a locator dot? Traces in free-run?

I haven't tried this yet as I can guess sod's law making it the case that
I'd have to pull the plug just at the point where the CRT has warmed up
sufficiently. The other slight problem is to test this requires the board
to be completely inserted with every connection made plus a temp probe to
the power resistor which is all rather fiddlesome and not to be done
repeatedly if it can be avoided. I can see a situation arising (sod's law
again) where someone here will post saying - "oh, whilst you still have
the board out, just check this..."
Nevertheless, if nothing is said in the next 18 hours, I will test it all
reconnected and post the outcome here.