[Otter74]

I've got my (family's) old tuner and turntable set up in my dining room so I can listen to my LPs. It's a Yamaha R-700 tuner and Technics SL-D20 turntable (early '80s vintage) hooked up to some spare mini-stereo speakers that I had sitting around. It worked fine until suddenly it didn't. Now when I cue up a record, I effectively get no sound. Output is going to the speakers, and if you listen close you can hear the music playing very softly. On top of that is a loudish hum. When I switch the input or output on the tuner, I get a loud snap/pop when I switch sources. I really have no idea what is going on, and I'm far less comfortable diagnosing electronics that I am mechanical stuff, so I figured I'd ask here. Nothing happened gradually - it was fine one day, not fine the next (as best I can remember.) Is this as simple as bad RCA cables? It's the only thing I can think of. I don't have any spares I can swap in to do an A-vs-B and I'm reluctant to buy a set just for that purpose. I doubt anything is wrong with the tuner. Speakers? (Is this something that can happen to speakers if you over-power them, or do you just blow the cones out?) I just remembered I've got another set i can swap in, so I guess I'll try that when I have time.