Quote:
Originally Posted by miniman82
Does your pattern gen have a means of switching off the chroma when bars are on screen? If so you can probe the band pass amp or demod driver to see if the chroma signal is getting though, switching chroma on and off while you probe gives you a way to make sure you're not just looking at noise.
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Good idea. Yes, my generator has a Chroma Off switch, so that would be easy to do.
Gack. I was measuring something else when HV disappeared and the 6CB5 horizontal output tube began to red-plate
I pulled the 6CB5 and it is toast. No spares for that in the house, so I'll have to order a replacement (or two, for good luck).
Meanwhile, I assume it's OK to power up the chassis on the workbench (with yoke and convergence coils connected) with that tube removed . . . .
Phil Nelson
03-08-2015, 01:53 PM
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