Anybody out there in electronics? My experience is hobbyist level, and it's been many years since I did much. Fixing a Denon AVR that has a persistent buzz for the first 15 minutes it's on. I've fixed the cracked solder joints on an IC mount (the commonly known cause) but the buzz persists. So doing visual recon. Spotted this suspicious item (photo front and side views). I *think* it must be a capacitor given the 10 pf rating, but unsure about the poo. Is this cap leaking? Or is this a glueblob?
@codeWhisperer that's adhesive. When a capacitor goes bad, you'll see a bulge on the top.
@JohnRadcliff Understood, and usually there is a crosshatch to help with the pressure. But I am unfamiliar with this rectangular packaging. Wasn't even sure if it was a cap or some sort of inductor.
@codeWhisperer I did a search of the numbers and didn't come up with anything...then just thinking about the issue of it buzzing for 15 minutes before it settles down and I'm sorry to say I don't have an answer.