Zenith with jaundice

[bgadow]

I haven't been able to correct this with the screen & gain controls. I worked on this quite a bit last night & I'm afraid this is a crt problem. After reading up on it I measure the G1's. Blue was reading about 20+ volts below the other 2. I then unplugged the crt & retested; they were all three equal @ 225v. I have several crt testers but only one works right now & its a basic & tired Sencore. It shows strong readings from red & green but blue being basically dead. I took this with a grain of salt, hoping the gun switch on the tester was bad. Unless someone has other ideas, I guess I'll just set it up for the best compromise I can make & live with it against the day that I can find another crt. The one in there is a rebuild from '74, a Zenith with a Sylvania EIA #. If the blue was awake it would be great.