I have a Mackie DLM8 Speaker that returns an "ERROR!" message every time that it powers up and does not allow music to come out of the speaker. Anybody have an idea what that actually means or is it a default message that something in its power-up bit check failed? Anyone have an idea to access parts to replace? I live about 60 miles from Los Angeles and was hoping to avoid the commute, trying to find reputable electronics house to fix, shipping the poundage, delays getting it fixed, etc. Thanks for any assistance you can provide!!