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Hi guys, does any one out there know anything about the Wells Gardner D9600 model CRT. i have a number of them that have a distorted picture mostly with a shrunken picture size. i have tried with the monitor controls to change the picture size without any success. does anyone have any solutions or a service manual or any suggestions? any help will be greatly appreciated

Shrunken in what way? From the top and bottom or the sides or both?

in some cases both. but for most have shrunken from the top and bottom only leaving a few inches of picture in the middle

From top and bottom I would suspect a bad vertical circuit. That being a bad resistor, cap or diode within the circuit or a bad vertical out put. Google the vertical output number and see if you can find a diagram of the chips pinouts so you can check running voltages. As far as pinched in from the sides, that's a horizontal problem. Possibly a tube matched up to the wrong circuit board if both problems exist simultaneously.

thanks for your help. i will see what i can find on google

I looked for a while. I found a Guide for a 9300WG its almost the same. E-mail me if interested.

Shrunken in all directions could be caps in the power supply section if that monitor has a switcher in it... or could be low B+ voltage.

Either case, I'd start by capping them then troubleshooting them further. You'd be surprised at all the problems that can be solved by recapping monitors.

RJ