I'm trying to fix a device that has a huge cap that leaked badly.
The leak is like molasses. Maybe thicker. And there is around 2 puddles of 2-3 teaspoons each.
I cannot clean the thing very well. So I can't read the specs on the cap so far. I am not sure if black was the original electrolytic (if it even is that) color or not. I also do not have the blueprints and the service manual i have is garbage.
So, the question is, if I do not find a way to read the marks on the cap, or if the marks are not useful for id, what is a good way to identify which fluid I am dealing with?
And what are common solvents for the most common fluids in a cap?
OK, this is a bust. I finally managed to pry trhu the black glue, and indeed, it is glue. as @DaveTweed mentioned.
When i removed the top cover, i was surprised to not find the explosion of goo inside. Instead, after removing the whole assembly, the back of the board, which is covered in glue for waterproofing (and unserviceability), had a crack and the black thing clearly oozed from that crack.
It was already solid. and the black part was mixed with the clear part, all around a burned out transformer.