CPX200 Power Supply malfunction.

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Dear Sirs

I have a TTI CPX200 Power Supply with one of the outputs not working.

It is the ouput number one.
The ouput number two works fine.

The OUTPUT 1 display shows zero volts and zero amperes.
The CV and CI leds are turned off and the UNREG led is turned on.

If I switch off the output the UNREG led turns off and I can adjust the current and voltage with the corresponding knobs, but when I turn the ouput on again the display measurements returns to zero volts and zero amperes and the UNREG led turns on again.

I found the service manual at this site but I havn't been able to solve the problem by myself.

Did anyone had this problem before or have some tips to solve the problem ?

How can I contact the person who posted the service manual ? ( His name is cbuckle )

Thank you very much for your attention, I hope someone can help.