Firstly, apologies if I am posting this in the wrong place.
I have had a very good experience with a wired streaming set up for several years - until now!
I play music streams (either CDs ripped to a Naim Uniti Core and also one of the cheaper Melco digital music libraries, and also Qobuz streams) on a Naim NDX2 (with which I now use the new NPX300 power supply in place of my previous XPS2) and from there to a Naim Supernat2.
My domestic network is based on ethernet cable running from a BT Super Hub with full fibre to the premises. There are ethernet sockets at different points of the network to allow connection of various pieces of kit (TVs, Apple TVs, BT TV box etc).
All worked well until a few months ago when - and I cant figure out why - 2 of the 3 locations (one being my hifi as described above) dropped off the network. After much trial and error I find that if I connect the Melco directly to the ethernet wall socket and from there to the NDX2 using the Melco’s ethernet ‘player’ socket it works fine - both the Naim/Focal App and the Roon App can see both the Melco and the NDX2 and can control both as normal. Also the Melco can access the internet for purposes of looking up details when ripping a new CD.
But if instead of connecting the Melco directly to the ethernet wall socket I instead add a switch (to allow a wired connection to a tv and also an AppleTV box) and run a cable from the switch to the Melco then the network connection fails - neither the Melco nor the NDX2 can be seen by the control Apps and, for good measure, neither theTV nor the AppleTV can establish a wired connection to the internet.
It’s not the fault of the switch - I’ve tried several different makes including the Etherregen switch I used successfully for several years.
The only clue to what may be happening is that one of the ethernet cables that runs from my BT Super Hub to a different TV Room may be disrupting the network. When I disconnect it from the network the 2 other locations (including the hifi) work fine irrespective of whether I add a switch at each endpoint. But I need to keep the ‘rogue’ cable connected as it delivers the network to the TV Room (where it connects to a switch without causing any disruption).
So, I’m left with a wired network that only works if I do not use an ethernet switch at 2 of the 3 endpoint locations. The result is that at those 2 locations I can only connect one device to the ethernet socket - ie the Melco/NDX2 in the case of the hifi - and I have to use wifi for everything else at those locations. And yet at the third location I can connect several devices to the network using a switch without any issue.
Apologies for the long post - writing it was therapeutic! My Question is : can an ethernet cable continue to carry the network but perhaps introduce a form of electrical or other interference that would disrupt the overall network in the way I have described?
I would be grateful for any insights from the Community.