Thank you Rolando et al.  The power supply went south.  It's the Pyramid that A-P used to sell.  I substituted a Radio Shack power supply, and the CP3 works fine.  I did a the three park positions available in the keypad successfully.  I need stars now to recalc the mount.  Maybe the Pyramid will come back.  It was much hotter than normal when I disconnected it.