While replacing the problematic large (Wincap) bulging capacitor in one of my early 5 volt premier NYC Dreyfuss engines, I noticed a second bulging 16 volt 470 uF capacitor on the processor board, and replaced it. After putting the board back in the engine, while testing it, the small 16 volt cap bulged again, squeezed out a drop of oil, and got so hot it melted the insulation on a wire that was touching it. I left it cool down and started it up again to measure the voltage to this cap and it's receiving 24 volts. It also only gets warm now. Not knowing what the voltage should be, I tested a second engine, that the board is mounted in the tender, and only found 12 volts at the same capacitor. My Question: Should I replace the capacitor with one rated for a higher voltage, and leave it at that, or go further and get to the bottom of what's causing the 24 volts?
