Denon Dn-x120

im having major issues with my mixer , i noticed the blue led has stopped functioning , when i run any sound through any of the channels they are extremely muffled and very low volume , also the level led’s do not move , with the mic in the levels are not moving either and there is no sound.

the only lights coming on are the cue button lights and the reverse fader led

can i get this repaired or is it time to put it in the bin ? seems such a shame as it was a good little mixer.