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?
Are there any of the same type caps doing that same thing?
@tgraph52 I do not see any others like this one. This receiver has about 6 or 7 boards, and I should mention that the reason I pulled this particular one (after fixing the well-known issue at http://nikita.tnnet.fi/~weopu/specials/fixingdenon/) is because when I flexed this board slightly after power up, it was the only thing that seemed to impact the initial buzzing sound. Suspicious.
I guess my first thought is that the rest of the board looks so clean and neat that the glob seems to not fit...