I will check your way...I was going by pin 19 being green and buzzing to earth and on top side of pin (plastic) is labelled 19 (being far left) ...with otherside being 1... 
Sorry Marty, please re-read my post above... very right is pin 1
OK...I'm getting tired so I will pull the pin shortly...I apologise if I'm not doing this correctly...
I've run gnd off the COM on the PSU. On pin 12 (DC) I'm getting 4.9v. On pin 04 (DC) I'm getting 0.0v. On pin 3 (AC) I'm getting 0.0v. On pin 13 (AC) I'm getting 0.0v.
