[TinCanAlley]

Originally Posted by DaveWM

wow looks pretty good in the second pic, how does that look with regular content? can you adj for good contrast and reasonable brightness and not have jail bars? Now I wonder if there is a problem or are you just asking too much of it. Remember jail bar exist due to lack of complete blanking in retrace, if the CRT bias setups (contrast/brighness/G2) are pushed to an extreme I would not be surprised that they could show thru.

as far as were to hook up, I would pull the CRT socket back a tad and use the clip on style scope probe.

Thing is, the second picture is full contrast AND full brightness w/massive blooming. It's definitely being overdriven. If you try to watch program content, it is way too bright and washed out. The jail bars are the most noticeable with normal levels of brightness and contrast.

I usually bring up the contrast to the point of blooming and then back it off. I then keep backing it off until the level is right for the viewing environment. I then adjust brightness up until I get decent shading in the dark areas of the picture. Sometimes I have to go back and forth between the two controls to get it right. In no way am I driving it too hard with those controls and the G2 voltages are within range.

Tomorrow will be my day for checking the cathodes, G1 and G2s.