Are we talking electrical leakage or physical electrolyte leakage? The
brown stuff could be electrolyte, or it could simply be glue used to
support the large capacitors.

The brown crust was definitely leaked. It was irregular, not completely
encircling any of the three capacitors it pooled around, and connected.

Does anyone have any thoughts to my original question? Does
lighter-colored paper in the center of the wind indicate a leak?