Revisiting an old topic - Adding DC Restoration to a 1950s TV

[maxhifi]

Originally Posted by Kevin Kuehn

That R32 150k you crossed out, what happens if you put that 150k in series with the top leg of the diode? Without that there you're really loading down the signal when the brightness control gets to the extreme ends of it's travel.

I used it but didn't show it, but I did this with a 100k resistor. I tried 150k, but it resulted in inadequate brightness range. With no resistor at all, it ends up being way too bright.

[Kevin Kuehn]

Have you experimented with smaller cap values? Could be the RC constant with 150k isn't allowing the .1uf to fully charge. I'm just kind of guessing at what's going on there. I'd like to see the rest of the schematic. Is that in Sams?