JVC RX-6018V Receiver "subwoofer makes humming sound" Questions

...subwoofer makes a humming sound. So I believe the sub works. Do i have a wrong set up? Or does the receiver not work? I assume it's an active subwoofer, since it hums. Did you activate sub in the ...

Subwoofer will not produce sound. Connections are correct. I do hear a hum or a crackel as I pull the connection on and off. AVR-689 model In order to ensure output to your subwoofer: make sure the ...

...subwoofer removes humming. Turning volume all the way down on receiver doesn't make any difference. Turning "Subwoofer (NO)" in the setup menu removes the humming (relay clicking inside receiver), ...

tvee model 25 popping and constant humming from the subwoofer Have you checked all your wire connections? To make sure thier not loose. 

subwoofer is working but I think it developed a short ciruit. The input jack in the back hums but no sound? Am I right and where can I go to get it repaired? you need to perform this ...one end of the

...makes it easier to figure out what its not. If the cables offer to much resistance (16 or 32 ohms) and the sub is 8 ohms that might have something to do with it. Try to match the impedance (ohms) of ...

...makes noise during use and it will be serviced. This could be as simple as a bad connection in the power supply area and you are hearing oscillations or it could be a defective power transformer. ...

...humming noise emitted from the subwoofer (assuming that no buzzing / humming means no grounding problem). One post I read had an identical problem and his solution turned out to be a new cable. To ...

D4 is blown on the output board. Anyone have any thoughts as to why it blew? The sub was randomly making a full volume hum before it went completely. Also looking for the schematics so I can repair ...