Can you confirm the AC input voltage on the power supply board? - At connector J1, probe pins 1 and 2 (leftmost pins) using AC volts setting on meter. (Doesn't matter which probe goes to which pin). Should be around 115 Volts AC.
If it's closer to 240volts you may need to reconfigure your main transformer for 240 volt operation.
See image below for transformer setup.
