Samsung Troubleshooting free download

File name Troubleshooting.pdf

5 Troubleshooting 5 Troubleshooting 5-1 No Power LAMP off, power indicator No Check a connection a power cable. LED red color? Yes Does proper DC 12V No Change a Assy PCB Power. appear at C801, C807? Yes Does proper DC A3.3V, No Check a IC812, IC801. A5V appear at Change a main PCB ass'y. C865, C863? Yes Does proper DC 5V, 3.3V, No 1.9V appear at C870, C861, Check a IC813, IC811, IC807. C847? Change a main PCB ass'y. Yes No Check a other function. A power is supplied to set? (No picture part) Replace a lcd panel. 5-1 5 Troubleshooting 5-2 No Video (Analog PC Signal) Power Indicator is off. Lamp on, no video. Yes Check a PC source and check No Input a analog PC signal and the connection of DSUB cable? connected cable(DPMS). Yes Does the signal appear at No PC cable. Change a PC 1 #3, 5, 7(R, G, B) of IC906? cable. Change a main PCB ass'y. Yes Does the signal appear at No Check a IC906. 1 #21,19,15(R,G,B)of IC906? Change a main PCB ass'y. Yes Does the digital data appear No Check a IC312. 2 at output of Change a main PCB ass'y. DIN(0:23)of IC312? Yes Does the digital data appear at No Check a IC201. 3 output of Change a main PCB ass'y. LVDS TX(FT250~253)? Yes Check a LVDS cable? No Replace a lcd panel? Please, Call to Samsung Co. LTD. 5-2 5 Troubleshooting WAVEFORMS 1 R,G,B Output Signal of IC906 2 R,G,B Output Signal of IC312 3 Digital Output Data of IC201 5-3 5 Troubleshooting 5-3 No Video (HDMI-Digital Signal)_EXECT 23' Power Indicator is off. Lamp on, no video. Yes Check the connectionn No Input a HDMI cable. o