Can anyone help? I keep hearing a 3 second high pitched beep but can't quite tell where it is coming from n our lounge where our home theatre system is, i.e. LED TV, receiver, speakers, blu ray player, modulator, router, Foxtel box and modem. There are a couple of cable connector boxes behind the system also. I thought it was our fire detectors but I took out the batteries and I could still hear this beep lasting about 3 seconds every 15 minutes. I unplugged the power for the TV and waited 15 minutes - I could still hear the beep. I unplugged the router - still could hear the beep. I unplugged the Foxtel box - still could hear the beep. I unplugged the receiver - still heard this annoying beep. Any ideas? Thanks John in Canberra, Australia
The only thing I have ever heard of making the high pitched beep at intervals is fire or house alarms. If you have a dead battery in your fire alarm it will go straight to its backup power and beep. Given the pitch and the proximity to the ceiling and how well the sound echoes it can drive you nuts.
The thing is most of the time these alarms are all installed at the same time. So if you try to figure out which one it is and which battery to replace, well you are doing the same thing a week from now. And we all know that batteries only die between 1-6 AM.