Samsung Troubleshooting free download

File name Troubleshooting.pdf

CONFIDENTIAL 5 Troubleshooting 5-1 No Power No LAMP off, Power indicator LED off. Check a connection the 14V adapter? Yes Does proper DC 14V No 1 Change a 14V adaptor. (BN44-00051C) appear at Pin 1 of CN205? Yes Does proper DC 14V No Check a connection the 6 Pin hamess and 2 appear at C847? change a input board assy. (BN59-00339A) Yes Does proper DC +3.3V_A, No IC801 or IC805 are bad. 3 +3.3V_B appear at Change main assy. (BN94-00400A) C826, C867? Yes Does proper DC +2.5V_A, No IC802 or IC806 are bad. 4 +2.5V_B appear at Change main assy. (BN94-00400A) C827, C813? Yes Does proper DC +5V_A, +5V, No IC810 or IC804 or ICP22 are bad. 5 +5V_LVDS appear at Change main assy. (BN94-00400A) C889, C865, CP133? Yes Does proper DC +12V_3 No ICP23 is bad. 6 appear at C841? Change main assy. (BN94-00400A) Yes Does proper DC +8V No IC843 is bad. 7 appear at C843? Change main assy. (BN94-00400A) Yes No Check a other function. (No picture part) A power is supplied to set. Replace a assy LCD panel. (BN91-00388L) LW22A13W 5-1 5 Troubleshooting CONFIDENTIAL WAVEFORMS 1 2 3 4 5 6 7 5-2 LW22A13W 5 Troubleshooting CONFIDENTIAL 5-2 No Video (Analog PC Signal) Power indicator is green, Lamp on, No video. Yes Check the PC signal and check No Input a analog signal and connection of FPC DVI cable? connected cable. Yes Does the signal appear at No Change FPC cable (CN100) or change a 8 #18, 16, 14 (R, G, B) of CN100? input board assy. (BN59-00339A) Yes Does the signal appear at No IC350 is bad. 9 output of IC350?