Progress recently depends very much on your definition of 'progress'. One of the puzzles recently was whether the media player could feed an input that was at elevated potential with regard to earth, but with 0 volts across the two terminals. The VF input to the timebases floats at 300v above earth (tricky, this, as the circuit earth is, for ( Read more... )

More tinkering over the last week- the PSU unit is now complete and up and running, with the two U31 rectifiers doing an excellent job at bringing the set up gradually. Having discovered that the U31 has a 25v heater, and subsequently poking around on Ebay to look for a dedicated 50v transformer to supply the two in series (necessary in case the ( Read more... )

Well, it's been a while since my last televisual post, mostly because there's been little happening, due largely to an irritating unavailability of one or two small items. Crucially, I was missing the EL33 frame output valve, which seems to sell on Ebay for anything upwards of £25, which I consider OTT for a valve. Eventually I managed to get ( Read more... )

Well, progress has been in dribs and drabs- there have been few tasks that I've been able to tackle en bloc, as it were, and little tiny finishing parts have been trickling in. One of the better trickles this week was a package containing the two U31 rectifier valves:

( Read more... )

Another update is in order, I think ( Read more... )

Another little update on the story, so far ( Read more... )

Further television progress, in a small way ( Read more... )

Yet another TV update, this time on more conjectural and experimental matters than actual construction ( Read more... )

A little more progress today. And, indeed, yesterday ( Read more... )

Just a short one this evening ( Read more... )