Light sequence not in manual

[Chris286]

I have a HW-T400/XU soundbar which works fine but sometimes I find it has powered on and the LEDs on the front are a sequence which I can’t find in the manual.

The sequence is three solid white lights and a fourth blinking white one.

None of the buttons on the remote or on the side of the soundbar make any change so I have to unplug the power and reconnect to resume normal operation.

[UNKNOWNUSERNAME]

and what exactly is the lights affecting may i ask?

[Chris286]

With the lights in this sequence the unit is unresponsive and the only fix is to unplug the power cord and back in.

[Chris286]

Any ideas Samsung?