Yeah, I realised they were choke coils after I posted. If they are involved in filtering it raises a question mark though doesn't it? Otherwise that leaves me with the surface mounted stuff after them to check.
I've never really owned anything Samsung other than a fridge-freezer, not even phones, so have no idea on the quality. I can't afford, nor have need for some high end system, and I am enjoying learning new stuff in the process, work on those skills and all that.
@jordheis It was the first thing I did - the photos were taken as soon as I had taken off the lid. It was just dust. Thanks though!
@petertub Haha But then I won't have a 5.1 theatre system 😢
I've never really owned anything Samsung other than a fridge-freezer, not even phones, so have no idea on the quality. I can't afford, nor have need for some high end system, and I am enjoying learning new stuff in the process, work on those skills and all that.
@jordheis It was the first thing I did - the photos were taken as soon as I had taken off the lid. It was just dust. Thanks though!
@petertub Haha But then I won't have a 5.1 theatre system 😢
Right, after more testing I have narrowed it down to the individual channels - both rear satellite channels have a ~10dB higher noise floor once it detects a signal and the amp kicks in. Voltages are the same as the others, as are the channel layouts, so assume it is either the surface-mounted components not filtering or earthing properly but I have no idea what they are all for to try and pinpoint it. I am hoping that someone here that can understand audio schematics can point me in the right direction. I don't really want to have to replace everything 😂
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Failing that, seeing as the noise is independant to the audio volume, I am planning on boosting the rear speakers volume to max to increase the SNR via the internal speaker balancing, then attenuating the entire signal with a resistor.