I sent my KTX-100EQ with my 9887 to United Radio Service to see if they could get it to work with my HU as I could not. They said this item could not be field repaired so they can't even try to use it. Should I try to find a local shop that sells Alpine stuff to take it to to see if they can figure out why it won't work? I called Alpine tech support when I was trying to get it to work and they basically were no help. I would really like to get it to work, but I don't what else to do here.