Audio hum from FIOS box
I installed a new amplifier in my home theater rig and immediately noticed a hum that wasn't present with the old amplifier. I traced the problem to the coax cable from the FIOS cable box. The hum was present if the cable box, modem, and the amplifier were all plugged into the same surge protector. The hum was present if the cable box's AC was unplugged. The hum went away if I unplugged the coax cable, regardless if the AC was plugged in or not.
I eliminated the hum by passing the coax cable thru the surge protector. My question is, should I leave it at that? Would you say that "fixed" the problem? Or is that merely a kludge? Should I dig deeper and see if I can find a wiring mistake? Maybe the FIOS installer did something incorrect? Or should I consider the problem solved? Electrical problems are not my forte.