crazyas

Hey was wondering if anyone can help me out.. got the DFA built but having issue's to calibrating the unit.. It seems that TP2 reads -4.30V and OUTPUT reads -0.60V all the time, doesn't matter how much i play with the trimpots it wont change ive had a look at the board but can't find any faults or maybe after looking at it so much im just overlooking it hehe, attached some pics maybe someone can spot something? Cheer, AS