I went out to do a one box, d11, upgrade. Customer had 3 boxes so this one made 4. I ran the new line, hooked up the box and activated it. Then the customer tells me his TV upstairs is searching for sat. I check it out and sure enough it is searching. After a reboot I start checking the cable. I started from the TV and worked backwards since all I did was add a new line. I traced it to the basement and found a white coax connected via a barrel to the standard black cable. The customer then informs me that the box that is searching for signal is also driving a second TV in the bedroom. I was pissed to say the least and I informed him that he cant have a splitter in the line. The customer stated he didn't have a problem until I connected the new box. Is he telling the truth? Will adding a 4th box cause the search for sat to appear? Also, was it my responsibility to fix his problem? I didn't since I suspected he was not telling me the truth and I was not there for a service call. The problem is easily fixed by running a new line from the dish and connecting to the black cable after disconnecting the white cable. But again I was pissed.