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"Tenna" PS-20 power supply


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Does anyone have a schematic of the "Tenna" Phase III PS-20 power supply? If anyone has a schematic for a Pyramid PS-20 supply, it may be the same. This unit is a 120 VAC to 13.8 VDC @ 17A continous (20A surge) power supply with no crowbar or other "protection" circuit. Just a "plain Jane" regulator circuit using 3055 pass transistors and an ECA723E regulator IC. I'm pretty sure the '723 is bad, but would like a schematic to do some more detailed troubleshooting.

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