I have a Roku SoundBridge M1000. (Based on some reading here, I believe it's the M1001 model that's labeled as an M1000. The connections are all in the back and not the end caps.)
Recently, it has started making a sputtering sound that I can best describe as a helicopter sound. When this happens, all music stops and the screen goes blank. The sputtering continues until I unplug the power. If I wait a while, I can plug it back in and it may be fine for days or months, or it might start the sputtering sound right away.
Could this be an issue with the power supply? Or, is this something internal to the unit itself?