Measuring VIC105 {13} and {16} feet have a 2.5 V voltage, DAC is normal. Process according to the signal detection, when the check to KIC2, KIC3 {2} feet when input signal, and measuring KIC2 KIC3 {1} feet, no signal level change, so the suspect KIC2, KIC3 damage, change, troubleshooting.ebHservice manual download site