Bruce,

Try checking the G-Y/Blanking tube. If it's not seated good and the heaters go out, the screen goes green with the retrace lines. I think it's a 6GU7.

Then Green problem turned out to be as charlie pointed out. The tube socket had broke loose from the board. Now we have a b/w picture with a rainbow color patern color killer has no effect, Color and tint has no effect. I will have a free day wednesday to get to play with this set some more.

sounds like the color sync is absent. Use a color bar generator for a good strong color signal. Adjust the 3.58 reactance coil and see if you can make the color bars stand up. Of the bars are getting wider and more upright, you are going in the right direction.

If you can make them stand straight up, but they won't stop moving your 3.58 crystal is good. its making the correct frequency, its just not locking in. Look around the bandpass amp and bust amp for changed resistor values and or open caps. ALso check that tube sockets have not come loose on the board in the color section.

If you cannot amke the bars stand up and the reactance coil has no effeect, there is improper frequency and most likely the 3.58 crystal is bad. I may have some old video speed servicing from the PF reporter I can scan for you if I can find it.

This seems more like AC interference causing the rainbow pattern. It is present with the color control turned down. Also brightness seems to go a little dark when on a strong station. AGC has little effect.

My parents had a 27 or 29" NEC TV from the late 80s until early this decade, and that set had a flat pane of safety glass over the front of the bezel covering the tube. So the glass face of the tube was set back from the safety glass by about an inch.

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