I am having a similar problem with my stage. I will turn the TV off, stage will turn off then 5 min later the stage will turn everything back on. It doesn’t do it every time, it does it randomly but always around 5 min or so after turning everything off. Very bizarre.
Ok I bought a WiFi extender by mistake….I now understand what you mean so what I have done is I have taken the playmaker to the room where the router is and have connected the playmaker via an Ethernet cable directly to the router, connected speakers and I still have the same issue! 🙁
So I purchased a powered network adaptor. The adaptor has full bar signal…..connected the playmaker via Ethernet cable. It works initially then a couple of hours later when the TV has been used it has the same problem. As soon as the TV is switched on I can’t connect anymore to the playmaker via Airplay. I can see the playmaker on Apple Music but it says cannot connect. If I turn the TV off the playmaker still doesn’t work, I have to reboot the playmaker each time. I have tried to change the channel used on the Wifi router but it made no difference.
Another reason why the sound isn’t great is that if it still has the original dampening foam inside, it would have turned to mush by now and that effects the sound greatly. When I changed the foam in mine the sound changed dramatically. Was like a totally different speaker.
I use a beolink 1611 converter with all my stand alone BL3500’s. Works perfectly.
Only have to press one button to start listening and you can alter the bass, treble etc and the preset volume. You can’t do anything like when using just a cable.
