Looking at the labels on the transformer, did you look at how they have it wired inside on the terminal board by the caps? You never know..... If they had at one time, changed the wiring on the tabs to 220vac, they might have dorked something up swapping it back and forth.... Maybe a solder splash on the meter voltage tabs or???? I have seen some crazy wiring on these things. Check the voltage on the meter tabs on the same terminal board above the bulk caps and go from there.