If I were to ask a question about signal and noise in home electronics, and how to debug an issue, and what possible solutions might be, would that be on-topic?
In my mind, system-level debugging and noise in consumer electronics occupy a weird space between consumer electronics (where enthusiasts are in over their heads compared to engineers) and electrical engineering (where practitioners have a solid understanding of the fundamentals that can cause weird behavior).
As a case in point, I've got a receiver sending a signal to a wireless transmitter to my subwoofer. Somewhere before transmission, the line is picking up an FM station at 140Hz (that's the cutoff at which the sub's low-pass filter removes the noise), but only when the receiver is off. Would it be on-topic to ask how one might debug this setup or isolate the various components from noise?