1956 Hoffman Colorcaster (56K Warning - Lots of Photos)

[benman94]

Tom of course is correct. The 12 volt rail comes from the power supply. Sleep deprivation strikes again!

Cleaned up the HV cage today. Still arcing somewhere; I can hear it, but I can't actually find it. Bob G. has graciously offered to tap a new pot for me at a reasonable cost. I'll take him up on that offer. I may try it with a standard linear pot however and see if it makes any visual difference. I had suspected based on the changes from the 703 chassis that such a modification would cause only a slight change. Given Doug's simulation, I'm inclined to believe I probably won't notice the difference at all.

[ohohyodafarted]

Originally Posted by benman94

Tom of course is correct. The 12 volt rail comes from the power supply. Sleep deprivation strikes again!

Cleaned up the HV cage today. Still arcing somewhere; I can hear it, but I can't actually find it. .

Ben, When I cant find a HV leak I try these two tricks. First and easiest is to run the set in total darkness to see if you can see the arcing in darkness.

If that fails I get a few feet of heavy wall 3/8" ID vinyl tubing and stick one end in my ear and probe the suspected area where the HV leak is, with the other end sort of like a stethoscope. The sound of the HV leak will get louder as the end of the tubing approaches the location of the leak.