It is a mains filter. A easy LC community consistent with a mains plug and socket. There’s an X-class capacitor on the output facet, which had clearly had sufficient. The stench was horrible. On with some gloves, and clear the factor up!
A brand new capacitor was soldered in, and the filter reassembled.
These caps have a tough life. It is tough thus far them, as the identical Rifa capacitor remains to be out there as we speak.
Apologies for the appalling picture. I’ve received a brand new SLR digicam on the best way, which is able to hopefully enhance issues.