I have a 2 year old Panasonic 5.1 home theater system that just recently started popping occasionally, but it is a very loud and startling pop. It happens infrequently, maybe once every 30-60 minutes, regardless of the source. What typically causes speakers to pop and is there anything I can do to fix it?
Wonder if this could be some sort of static discharge? Perhaps you should check your grounding.
It does happen throughout all the speakers and this post made me think... I bought a new power strip about 6 months ago and the light that indicates proper grounding never came on. I don't know anything about checking it though.
Doubtful it's a grounding issue. The safety ground is just that, for safety purposes. It really has no impact on system noise unless you have a ground loop hum. Is there some new appliance located nearby that is turning on and off? Alot alot of people (myself included) often experience a pop in Dolby Digital mode when a broadcast station switches audio modes. You indicated it happened at regular intervals and from all sources however so it still sounds like a receiver problem.