Why isn't the power indicator light on my RDC8445S controller working?

I encountered a problem today, the power indicator light of my RDC8445S controller suddenly stopped working. Normally, this indicator light should be on to display the power status of the controller, but no matter how I checked it this time, there was no response. I first checked the power socket to confirm that it is working properly and the plug is securely plugged in. Could it be that the power supply is broken? Thank you in advance for any suggestions.