Hello,I have cheap & old theatre system I use in my
garage the main unit has 10" sub built-in & 5 small speakers with multiple device input options.
Plugged in to 110 & no speakers hooked up and no audio inputs plugged into it there is a whine heard either through woofer or something internal. I have a very long background in automotive electronics and onboard diagnostic systems, I can fix or identify
almost any problem in 12 V systems, but know nothing about the internal workings of audio equipment & what causes
them to produce unwanted noises, can someone help, it gets worse the longer it's plugged into the wall outlet doesn't
matter what outlet or where
garage the main unit has 10" sub built-in & 5 small speakers with multiple device input options.
Plugged in to 110 & no speakers hooked up and no audio inputs plugged into it there is a whine heard either through woofer or something internal. I have a very long background in automotive electronics and onboard diagnostic systems, I can fix or identify
almost any problem in 12 V systems, but know nothing about the internal workings of audio equipment & what causes
them to produce unwanted noises, can someone help, it gets worse the longer it's plugged into the wall outlet doesn't
matter what outlet or where