Well, having noticed that the RGB input card had some pots on it for doing ‘color balance’ as described in the user manual I decided to take a shot at it.
This certainly didn’t address my G2 issues, I still have too little output on the red and blue tubes, but I did manage to get a slightly more balanced image. (or maybe it just seemed that way).
I also tweaked the convergence (registration) a little more — I now have a pretty good image. It does seem that the unit warms up a bit as the convergence drifted a little after startup, but not enough that it would bother me.
After tweaking around for a while, probably about and hour and a half I opened up the cover to take a peek inside. The three neck card cooling fins were pretty cool. The HVPS was a little warm, the LVPS was cool. The heatsink on the RGB card was pretty warm. I really need to get some temperature sensors hooked up so I can get some baselines before I start thinking about modifying the fans.
Upon closer inspection of the neck cards, it appears the G2 controls are on them (duh). I’m going to have to fiddle with these at one point soon. On the black bars pattern on AVIA I have _no_ output at all from the blue or red tubes. It is also clear from the position of the controls that the green CRT is a lot higher (and IMHO too high).