I think the A14 filter assembly is just something that looks like a D-sub connector, and is probably just a bunch of ceramics caps potted inside the D-sub shell - not a lot to go wrong. The electrolytics are on the big board that you see when you take the bottom cover off the unit - these are more likely to be responsible for emitting smells. On second thoughts, tantalum beads could be the prime suspect after RIFAs and before electrolytics, for an instument of this age.
On a related note, at least to my nose, RIFAs are the ones which smell like crystallized body odour, whereas the last electrolytic failure that I came across was more like a fishy/rubbery smell, which slowly developed over time. I've also smelled a vinegary smell from leaking "new old stock" electrolytics. I dont recall what the last tant failure smelled of as they usually let go with a pop or hiss, and visible smoke, which tends to distract from the smell (as least it distracts me while I frantically grope for the off button).