Noise through subwoofer

[Sherwood]

Using a BK subwoofer. Recently getting noise through speakers. Not typical mains buzz, more like random fizzing. Any ideas and possible solutions?

BTW all devices plugged into same mains block.

[Macca]

RF pickup? Have you changed any cables recently or moved something that emits RF near to the system?

Neighbour just bought a ham radio?

Failing that could be a dodgy capacitor somewhere. That would be a pain.

[struth]

Disconnect one at a time from mains different units. Might give you some clues

[Mr.Ian]

Best guess is a cap or resistor is failing, common on older rel and they come from the same place. Will the amp unbolt from the sub, might just be 4 screws and some push on connectors, if so local hifi repair agent, probably cheap fix