I have a LG e4:2 that doesn't pass audio from one channel and the LIM led for that channel is lit a constant orange. This particular condition was not mentioned in the user manual. I know these amps often can tell when a speaker connected to an output is blown, and that is possible--at some point I have to test a working speaker on that channel, but in the meantime I wondered if the light specifically indicated a bad channel or something else I'm not aware of.