Abstract: Apparatuses (10) for reporting problems in cable systems comprising cables (101) and loads (111-115) connected to the cables via fuses (121-125) are provided with first circuits (1) for detecting the fuses (121-125) going from conducting to non-conducting modes or having reached non-conducting modes, second circuits (2) for changing impedances of the cable systems at locations near the apparatuses (10) by introducing one or more impedance elements at the locations, and third circuits (3) for bringing the second circuits (2) into activated modes in response to detection results from the first circuits (1). The second circuits (2) may comprise capacitors (4) and the third circuits (3) may comprise switches (5).