One of my Homepods not responding to iPhone as music source
Hi all... I have 2 Homepods and 2 ATV4's working in my home; a total of 4 sound systems in different rooms. With the ATV4's I have split out the audio so I can use it for music only (output to a conventional stereo set up) or for TV streaming with a screen. I typically use my iPhone/Apple Music as my source for streaming music. When I direct Apple Music from my iPhone to these various speakers, one of the Homepods seems to be "stuck" on a previous music source that was selected at another time. It just won't take up the one that I'm sending to the other 3 at any given moment. MInd you, in the past all 4 would successfully play from the source I would select from the iPhone/Apple Music. So this is a new issue. It appears that my iPhone 12 pro OS is up to date. When I go into the phone's Home app and press/hold the errant Homepod's icon... it shows the "stuck" source. Is there a way to change that either through the Homepod, iPhone or Home app?
To illustrate, let's say I want to stream Miles Davis from Apple Music on the iPhone to all 4 of the house's speaker systems. And let's say I was previously listening to KCSM (a streaming radio station) via Apple Music. That one Homepod won't let go of the KCSM stream and will not play The Miles Davis selection even if I select that Homepod at the iPhone. I'll see the gear spin for a few seconds, but then it stops, the Homepod remains unselected and the "old" source still appears under the Homepod's name... but no Miles ;-( . In fact, no music at all. However, if I go directly to the Homepod and tap the top, it starts playing... but only the "stuck" source, not my current music stream of Miles which is coming from the other 3 speaker sets.