Needing to test a 21fjp22...

[blue_lateral]

You'll need to get that tracking sorted out. These sets can make an excellent picture, but are not as bright as modern sets.

Kick it into "service" with the service switch, and with the screens set low, crank them up one at a time until each one barely makes a line. What this does is collapse the vertical to let you balance the screens at a brightness level below black.

Before you go much further though, there is a "kine bias" switch on the back. The screen setting should be done at the dimmest setting of the kine bias switch that will allow you to get a line with all three colors.

Turn each screen up until all three lines are the same brightness. This will be kind of hard to see because maybe two will land on top of each other and the other will not. Look at the dots. Get them all the same brightness.

Now flip it back out of "service" mode and get a picture. Turn the chroma (color) control all the way down. Adjust the brightness and contrast so you have some white areas in the picture, but so that they are not blooming. Set the drive controls until these areas are white.

Setting the drives will screw up the screen settings a little, so flip it back in service mode and go set the screens again. Keep going back and forth until both are right.

If you get this right, the guns should track all the way from black to white. In a dimly lit or dark room, adjust the brightness and contrast until you have a nice black and white picture with no blooming. Turn the chroma back up until you have a little color, and adjust tint until the fleshtones are right. It should look a lot better now.

John