Ikea Symfonisk standbye

Hello,

I made with the Mini Media Player an automation to play a specific radio station on a specific time on an Ikea Symfonisk.
When tested it works fine, but a day later is does not work. The connection with the Ikea Symfonisk has lost. When I start the Sonos app where in the Symfonisk is configured, the Symfonisk is recognisez and the automation works again.

I think the Symfonisk goes in a standby mode after some time. Then HA loses it’s connection with it. Does somebody have the same problem and maybe there is a way to send a signal from HA to “wake up” the Symfonisk?