Crumar Burn - LEDS colour
Crumar Burn has 2 LEDS, one in the bypass footswitch and another one in the speed footswitch.
They are RGB LEDS, this means that they can light with different colours. The "standard" colour is RED (keyboard mode with cabinet simulation). Hold down the bypass footswitch before applying power to the unit to switch to guitar mode without cabinet simulation... the two LEDS will now work in the same way but they will be BLUE instead of RED. There's another function that can be activate that is impacting the colour of the right LED: the noise gate. Power the effect on holding down the speed footswitch to activate the noise gate. The GREEN colour component will be added to that LED (regardless if it's RED or BLUE).
Last colour feature is the overload: if the INPUT of the instrument is overloaded because you are sending an audio signal that is too hot, the GREEN colour component will start lighting in the bypass LED signalizing the overload. In this case, please be sure to lower the volume on the unit that is sending the audio signal to BURN or check if the INPUT GAIN SELECTOR is set incorrectly, for example is set on HIGH.