Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung LCD TV LW15M13C 06_Trouble

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5 Troubleshooting
5-1 No Power

      Does proper DC 14V/15V appear    No
  1                                         Check FT101 and FT103.
      at DC jack connected to CN120?



                     Yes


           Does proper DC 5V           No
  4                                         Check IC103 and IC102.
        appear at Pin 2 of IC102?



                     Yes


          Does proper DC 2.5V          No
  2                                              Check IC106.
        appear at Pin 2 of IC106?



                     Yes



          Does proper DC 14V           No
  3                                              Check IC108.
        appear at Pin 5 of IC108?



                     Yes


           Does proper DC 5V           No
  1                                              Check IC108.
            appear at FT107?



                     Yes


              Check IC401.




LW15M13C/LW17M11C                                                    5-1
5 Troubleshooting

        WAVEFORMS

 1                  2   3




 4




5-2                         LW15M13C/LW17M11C
                                                                     5 Troubleshooting

5-2 No Picture (TV, Video, S-Video, DVD)

            Check C452 (TV)
           Check C453 (Video)    No
     5                                     Check the input signal.
          Check C454 (S-Video)
           Check C456 (DVD)?


                    Yes


            Check the IC401.




         WAVEFORMS

 5




LW15M13C/LW17M11C                                                                 5-3
5 Troubleshooting

5-3 No Sound

          Does the signal appear at
       Pin 67 (Tuner sound signal) and    No   Check the Pin 8 and (RF) of CN701.
        Pin 53, 54 (Video sound) and            Check the CN903 (Video sound).
           Pin 56, 57 (DVD sound)               Check the CN905 (DVD sound).
            of IC501 (MSP3425)?


                       Yes


      Does the signal appear at Pin 27,   No     Check the Pin 3 of IC501 and
          28 of IC501 (MSP3425)?                   related circuit of IC501.


                       Yes



          Does the signal appear          No     Check the IC651 (Audio amp)
      at Pin 2, 5, 16 and 19 of IC651?            and related circuit of IC651.



                       Yes


            Replace the speaker.




5-4                                                                                 LW15M13C/LW17M11C

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