Speaker on network but desktop Soundtouch app can't find it
I have been having a new problem for the last three weeks or so. The SoundTouch app on my PC is playing music just fine, connected to my SoundTouch 20 speaker over wifi. Suddenly the music just stops.
If you look at the speaker, it shows a brightly lit wifi symbol indicating a healthy network connection. The front panel displays the message "Select a preset or explore music on the SoundTouch(R) app". Turn the speaker off using the power button and the wifi symbol becomes dim and the message disappears. Turn the speaker back on using the power button and the wifi symbol becomes bright again and the message "Soundtouch(R) music servier unavailable" displays briefly, followed by the "Select a preset..." message.
I go back to my PC and the SoundTouch app says it can't find the speaker. After restarting the app, it searches for speaker and can't find it. Restarting again doesn't help.
The only way to fix the problem is to unplug the speaker and then plug it back in. After the speaker reboots (takes a minute or two), you can go back to the PC and the app has automatically discovered the speaker and is ready to play music. After you tell it what to play you're back in business. After a random amount of time, e.g. fifteen minutes the error recurs. It's pretty annoying. My wife is ready to throw the speaker out the window.
The fact that cycling the power on the speaker clears the problem suggests that the problem is on the speaker side rather than the app side or the router/network side. It feels like the speaker has dropped its network connection and thinks it has reconnected when in fact it hasn't. The "Soundtouch(R) music server unavailable" message indicates that the network connection is not operational, yet the wifi symbol remains brightly lit.
This is getting pretty annoying. Any theory what's going on here? Is there a firmware update I can apply to the speaker?