[Charlie]

I've been spending lots of time with this set lately... and seems I'm not gettin very far with it. I've changed many resistors around the 12BY7... actually all of them. The 22K 2-watt resistor was reading 38K. Changing it helped a little, but not enough to bring the brightness up to normal. It's still dark. Also changed some capacitors.

I swapped the 12BY7 with the one in my Curtis Mathes... made no difference.

As far as voltages go, everything is pretty close to where they should be. The voltages on my CRT are right on the money. SCreen voltages are healthy... cruising about 820 with plently left to spare if I crank them up all the way. So it's apparent that the boosted B+ is good.

High voltage is good and the hz output is cruising at 202ma.

Still cannot produce a horz line with the service switch (no matter which position the CRT bias switch is in). I checked and changed some resistors near the switch... no change.

The only way I can get good brightness is by placing the CRT bias switch in the bottom position, but I shouldn't have to do that since my CRT test excellent. Picture quality is pretty good while in that position.

I have a B&K Analyst 1077B that i'll probably dig out and try. I've used it twice before on blk & wht sets, and both times it helped me pin-point video problems really fast. Hopefully it will be able to help with this set.