Service Manuals, User Guides, Schematic Diagrams or docs for : LG TV ct-29q12ip 064bts

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TROUBLESHOOTING GUIDE


                                            C834




                R857
 D805, D803, ZD804, Q801




                                                                    3




                                Q04,Q851,Q852,Q853,IC802,IC804                           41




                                           8    IC507
                                                                        IC01,IC301,FR440,FR441,   D406,FR436,Q804,Q805.
                            8.0V                                        D407,D408.



                                                           IC507.
                                                75V



   R405, D811, FR848.

                                                                    135V



               D813,R811,R812,T403,Q402,L801.           Q401, Q402, T401.
FR459, FR901.




                             61




     20~25, 28~29




                     10~17        IC503.               Q205, IC201.




 IC503.                 29~30, 32~37        IC504.




                                           Check the waveform
                    IC504.                 at pin 54~61 of IC507.




                                                       Check/Replace IC507,
                Check/Replace IC507.
                                                           Q502~Q510.
NO VGA
                    Check the waveform
                    at pin 52, 60 of IC501.
        NO                                    NORMAL


Check/Replace                          Check the waveform
   VGA01.                           at pin 31, 32, 33 of IC507.

                           NO                       NORMAL


                 Check/Replace                Check/Replace
                    VGA01.                       IC507.




NO COMPONENT
                     Check the voltage
                     at pin 44 of IC01.
        0V                                    5V


Check/Replace                         Check the waveform
    IC01.                             at pin 10~13 of IC203.

                           NO                       NORMAL


             Check the waveform               Check/Replace
             at pin 6~8 of IC203.                IC503.

                     NO                             NORMAL


                 Check/Replace                Check/Replace
                Q202, Q208, Q209.                IC203.
               31V


FR852, D814.
FR848,D811,FR829,ZD103.




                                        IC102, R110 .




                          61




                               19
                                    IC201,Q203,Q204,IC204.




          IC03
                           1, 6     IC301.




  FR440,FR441,D407,D408.                     19, 20   IC507.




                     IC507, Q501, Q514.                  IC301, D301.




PIN CUSHION

                       21         IC507.




       IC507.                                    IC401




                           IC401                         R424.




                                     Q404, Q405.                        D402.
                   12   IC701.


                                      2.4V


  IC701, X701.                    6




                   Q701.                     35,36,37   IC507.




                                                          IC507.




          Check the waveform
           at pin 9 of P504B.

                                      NORMAL

                           Check/Replace Q2001~Q2003,
IC507,Q511~Q513.              IC2001,D2008~D2009.

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