Power light is on...~31VDC across the red and black terminals. No other lights. Display looks good with normal readings...except for cell voltage. The relay does not click when powered on...and I noticed that the display stays on when the switch is moved from Auto to Off. Z3 (Black varistor) looks and tests good. No other noticable burn marks. Transformer coils measure in range also. (~2.8ohms). Also getting ~3.5VDC on pins 1-3 to the display board.
(I have replaced Z3 multiple times in the past when it went bad) PCB is 8 years old.
Any suggestions....before I purchase a new PCB.