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LG RT-29FB55RB, Service Manual, Page: 1 / 34

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LG RT-29FB55RB Service Manual Download Page 1

COLOR TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : MC-049A

MODEL:RT-29FB55R/RB/RE

MODEL:

RT-29FB55RP/RQ/V

MODEL:

RT-29FB55VB/VE/VQ

website:http://biz.LGservice.com

e-mail:http://www.LGEservice.com/techsup.html

ON/OFF

MENU

OK

VOL

PR

VIDEO

AUDIO

L

R

AV3

Summary of Contents for RT-29FB55RB

Page 1: ... CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MC 049A MODEL RT 29FB55R RB RE MODEL RT 29FB55RP RQ V MODEL RT 29FB55VB VE VQ website http biz LGservice com e mail http www LGEservice com techsup html ON OFF MENU OK VOL PR VIDEO AUDIO L R AV3 ...

Page 2: ...ety Precautions 3 Control Descriptions 4 Specifications 7 Adjustment Instructions 8 T rouble Shooting 12 Printed circuit board 16 Block Diagram 18 Exploded View 20 Exploded View Parts List 21 Replacement Parts List 22 SVC Sheet ...

Page 3: ...perform an AC leakage current check on the exposed metallic parts of the cabinet such as antennas terminals etc to be sure the set is safe to operate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ...

Page 4: ...tte recorder 7 SSM Sound Status Memory recalls your preferred sound setting 8 I II option selects the language during dual language broadcast option selects the sound output 9 PSM Picture Status Memory recalls your preferred picture setting 10 TELETEXT BUTTONS option These buttons are used for teletext For further details see the Teletext section 11 MUTE switches the sound on or off 12 TV AV selec...

Page 5: ...icture on or off PR selects a programme for the sub picture SWAP alternates between main and sub picture INPUT selects the input mode for the sub picture SIZE adjusts the sub picture size STILL freezes motion of the sub picture POSITION relocates the sub picture in clockwise direction 9 4 PIP switches on or off the programme scan mode through 4 or 9 sub pictures COLOURED BUTTONS These buttons are ...

Page 6: ...picture items or brief auto programme while the menus not display 10 D D E E adjusts the function or selects a pro gramme switches the set on from standby 11 TURBO SOUND PICTURE option switches Turbo sound or Turbo picture function on or off 12 HEADPHONE SOCKET option Connect the headphone plug to this socket 13 AUDIO VIDEO IN SOCKETS AV3 Connect the audio video out sockets of external equipment t...

Page 7: ...ts based upon P N of B O M 5 Warm up TV set for more than 20min before the measurement Standard input Voltage 110 240 50 60Hz 230 50 60Hz Market Middle East Africa EU Chassis MC049A Brand LG No 1 2 3 4 5 6 7 8 Item Receiving System Available Channel Input Voltage Market Screen Size Tuning System Operating Environment Storage Environment Remark For EU For Non EU OPTION Non EU EU 200 PR W O TXT Spec...

Page 8: ...by crossing adjustment At this time 4 6 pole magnet is located to magnet of nothing 5 Move the DY to make equal red on whole screen and it does not to make the DY by fixed screw after check a simple color of Red Green Blue and white raster whether or not it is a pollution of color At this time take care raster of screen and DY must fixing in the condition which maintains a horizontality 6 Check th...

Page 9: ...y SVC communicator 3 Enter the deflection mode by selection SERVICE1 key on SERVICE MENU after enter the adjustment mode by pressing LINE SVC MODE IN START KEY 4 Enter the deflection mode by pressing ADJUST key 5 Use the CH D E key to select adjustment item 6 Use the VOL F G key to increase decrease data Note 1 When adjusting a deflection adjust N50Hz of PAL signal first and adjust a deflection at...

Page 10: ...screen to the best straight line 13 PIP PIP Position Adjust until the distance between PIP and main picture becomes about 1 2mm by using VOL key 8 OPTION Adjustment 8 1 Preparation for Adjustment 1 This option adjustment decides function in accordance with model Press the SVC TX adjustment button IN START button at SVC mode then adjust the option at OPTION1 mode 2 Mark the option adjustment data l...

Page 11: ...unction Without TURBO SEARCH With TURBO SEARCH 100 PROGRAM SAVE 200 PROGRAM SAVE Without EYE With EYE 8KEY 4KEY SYSTEM ACMS TOP CH AU HDEV Option Code 0 1 0 1 0 1 0 1 0 1 Function REMARK Without ACMS Function With ACMS Function FLOT TXT TOP TXT Without D K CHINA or BB SYSTEM With D K CHINA or BB SYSTEM China Australia ...

Page 12: ... NO NO Check The Voltage At pin 2 19 20 21 24 of IIC11 Check Replace Q601 Check Replace F806 D828 D805 Check Replace C821 IC822 Q807 Check The voltage At pin of IC821 IC822 Q807 NO OK OK OK OK OK OK NO No Raster Sound OK Check the Heater voltage of CPT 6 6 5Vrms Check HV Screen Voltage of CPT Check R G B out of CPT Board Check the Heater pulse of FBT T402 Check 200V line of CPT Board if no problem...

Page 13: ...H Out Check Q402 Collector waveform Check T401 each pin voltage Check Q401 Collector waveform Check the In out of regulator Check Fuse and Rectifition Diode of secondary Load of SMPS trans T803 Check Replace IC11 Check Replace IC11 Check Replace Q402 Check Replace T401 Normal Abnormal Ok 140 310V Open No No No No No Yes Yes Yes Yes IC821 IC822 IC823 IC824 IC825 Ok 18 20V Ok Check Replace Fuse IC80...

Page 14: ...e CPT Board component Go to No Sound Picture OK Check IC11 pin71 72 73 R G B out No No OK OK OK OK Check pin40 V out 1 1V p p Check 1 8V 3 3V 5V DC Voltage No Check SMPS Trans Secondary Voltage Q501 Q503 Q504 R G B out of IC11 No No Check pin18 Reset Voltage OK Check IC13 Reset IC No Check pin57 58 SCL SDA OK Check IC12 EEPROM SCL SDA Line No Relace IC11 OK 3 3V swing 3 3V DC ...

Page 15: ...n 2 4 of IC601 Check the voltage At pin6 of IC601 Check the waveform At pin 8 9 11 12 of IC601 Check the voltage Of pin2 19 20 21 24 of IC11 Check the signal line of SPK L R Check pin 55 mute of IC11 Check the vpltage At pin7 5 of IC601 Check Replace D828 D805 F806 OK AV OK OK OK OK OK OK NO NO NO NO NO NO OK Check the connection of side or Front AV Board NO Connect the Board OK Replace IC601 P603...

Page 16: ... 16 PRINTED CIRCUIT BOARD MAIN ...

Page 17: ...CPT VM 17 PIP ...

Page 18: ...9489X PIP Processor LA7222 Aud io Swit c h EYE Op t Tilt Op t STK396 110 VM IC SMPS TRANS ST 5V 12V PIP AV SW OPT 3 3V 5V Tuner Sub Relay VM 200 V FBT LA 7845 V AMP 14V FBT EW AMP 28 V FBT T802 IC11 LA42152 So und AMP IC601 LA42152 So und AMP IC601 ICP01 IC602 IC901 HIC920 ST 1 8V ST 3 3V 3 3V 8V ST 1 8V ST 3 3V 5V 9V 14V 17V 5V 14V 14V IC824 IC853 IC825 IC821 IC822 ICP02 11 ...

Page 19: ... C3 R Pr Y3 G Y B Pb V1 V2 V3 C3 R Pr Y3 G Y B Pb AIN1 L R AIN2 L R AIN3 L R AUDIO VIDEO LA7222 HOR EW VER TDA4863 EHT VCTi 49xxl P N SVCC 110V 12V 5V 3 3V 1 8V BIN BIN PIP Va Vb RGB o ut SVM o ut Hf b Hout Menu OK VOL VOL PR PR KEY IR AUDIO VIDEO GAME MODULE HS VS IFIN IFIN MAIN SUB MAIN SUB 3 T PIP VIDEO RIN GIN PIP VIDEO RIN GIN AOU 1 1 2 VOUT ...

Page 20: ... 20 EXPLODED VIEW 943 400 330 320 310 913 170 150 112 153 120 300 174 520 104 570 105 121 510 700 ...

Page 21: ...ET ASSEMBLY RT 29FB55RP STEREO E_PHONE MC049A SY ABANS 310 5020V00676C BUTTON CONTROL RT 29FB55RB 117A ABS HF 380 6KEY 5020V00715B BUTTON CONTROL RT 29FB55RE ABS HF 380 6KEY 117A 320 320 062E SPRING KNOB RT 29FB55RE ALT 320 075B SPRING COIL DIA 7 5MM H 15 5MM 330 5020V00677E BUTTON POWER RT 29FB55RB 84B ABS HF 380 1KEY 5020V00716B BUTTON POWER RT 29FB55RE ABS HF 380 1KEY 84B 400 3809V00321A BACK C...

Page 22: ...SVC SHEET 3854V A0146A S ...

Page 23: ... 20 EXPLODED VIEW 943 400 330 320 310 913 170 150 112 153 120 300 174 520 320 ...

Page 24: ...FB50 MC022A HIPS 60HR CPT SUPPORTER 300 3091V00445K CABINET ASSEMBLY RT 29FB55RB SET STEREO E_PHONE MC049A 117A 310 5020V00676C BUTTON CONTROL RT 29FB55RB 117A ABS HF 380 6KEY 320 320 075B SPRING COIL DIA 7 5MM H 15 5MM 330 5020V00677E BUTTON POWER RT 29FB55RB 84B ABS HF 380 1KEY 400 3809V00A55E BACK COVER ASSEMBLY RN 29FB50T ATLLKX 51SF MC022A 510 6871VSME79A PWB PCB ASSEMBLY SUB CPT MC049A 29Ó F...

Page 25: ...C 100A 1N4004A T 81 TP DO41 500V 1 0A 30A 10UA TVR06J TP 600V 250NSEC TS6P05G ST TSOP 6 600V 6A A SEC A GDZJ9 1B TP DO34 0 5W 9 1V GDZJ33B TP DO34 0 5W 33 0V GDZ5 1B TP DO34 0 5W 5 1V 0 02A MTZJ11B TP ROHM K DO34 11V 5UA LOCA NO PART NO DESCRIPTION HIC920 IC11 IC11 IC12 IC13 IC301 IC302 IC601 IC802 IC821 IC822 IC824 IC825 IC826 IC853 IC901 ICP01 ICP02 Q105 Q106 Q102 Q103 Q104 Q11 Q121 Q180 Q181 Q1...

Page 26: ...16V M FL TP5 LOCA NO PART NO DESCRIPTION C218 C219 C224 C23 C24 C25 C252 C255 C256 C303 C304 C306 C308 C309 C310 C402 C402 C403 C404 C405 C407 C408 C409 C410 C411 C413 C414 C415 C416 C417 C419 C420 C421 C422 C501 C502 C503 C504 C505 C506 C507 C508 C509 C510 C511 C512 C513 C514 C515 C516 C517 C518 0CN1010K519 0CN1010K519 0CE226DD618 0CN1040K949 0CE226DD618 0CE105DK618 0CN2210K519 0CN2210K519 0CE226...

Page 27: ...627 C631 C632 C635 C636 C801 C802 C803 C804 C806 C807 C809 C810 C811 C813 C813 C815 C817 C819 C820 C821 C822 C823 C824 C825 C826 C827 C828 C829 C830 C831 C833 C834 C835 C836 C837 C838 C839 C840 C843 C845 C868 C901 C902 C903 C904 C907 C920 0CF3341L438 0CF3341L438 0CF3341L438 0CF3341L438 0CK1030K945 0CF3341L438 0CF3341L438 0CE476DH618 0CF3341L438 0CQZVBK002C 0CQZVBK002A 0CE337KV6A0 0CK10201515 0CK10...

Page 28: ...DRIVE EI 19 BULK TRANSFORMER EER5345 300UH 30TURNS LOCA NO PART NO DESCRIPTION P13B P403B P551B P552B F802 F804 F805 F806 F806 FR402 FR403 FR404 FR405 FR901 J110 J204 J208 J211 J220 J222 J261 J509 J510 J512 J566 R101 R102 R103 R104 R105 R106 R107 R108 R109 R11 R110 R111 R112 R113 R12 R121 R122 R124 R125 R126 R127 R128 R129 387 A09J 387 B08G 6932V25002H 6932V25002H 0RP0050H709 0RP0050H709 0RP0020J8...

Page 29: ...ART NO DESCRIPTION R315 R316 R317 R318 R319 R32 R320 R321 R322 R323 R324 R325 R326 R328 R328 R33 R34 R34 R35 R37 R38 R401 R403 R404 R405 R408 R409 R410 R411 R412 R413 R414 R415 R416 R416 R417 R42 R421 R421 R422 R449 R501 R502 R502 R503 R503 R504 R505 R506 R507 R508 R509 0RS2700K607 0RD1000F609 0RD2702F609 0RN2001F409 0RN8202F409 0RD3301F609 0RD1001F609 0RD0561A609 0RD1501F609 0RD2702F609 0RD4700F6...

Page 30: ...TA52 1K OHM 1 6 W 5 TA52 3 3K OHM 1 6 W 5 00 TA52 2 2 OHM 1 6 W 5 00 TA52 100 OHM 1 6 W 5 TA52 1K OHM 1 6 W 5 TA52 270 OHM 1 6 W 5 TA52 100 OHM 1 6 W 5 TA52 100 OHM 1 6 W 5 TA52 100 OHM 1 6 W 5 TA52 100 OHM 1 6 W 5 TA52 100 OHM 1 6 W 5 TA52 100 OHM 1 6 W 5 TA52 LOCA NO PART NO DESCRIPTION 0RD1000F609 0RD1000F609 0RD1000F609 0RD1000F609 0RKZVTA001K 180 822M 0RS4702K619 0RS4702K619 180 A01P 0RD2200A...

Page 31: ...2F L3N S 23 HANDOK RADIAL BULK AG20PT 152F L3N S 23 HANDOK RADIAL BULK WSP 122N 1200V 100V 300V AXIAL TP FERRITE BFD3565R2F TAPING FERRITE AXIAL 62MM 1UH NY 3 5X6 0MM FERRITE AXIAL 62MM 1UH NY 3 5X6 0MM FERRITE AXIAL 62MM 1UH NY 3 5X6 0MM FERRITE AXIAL 62MM 1UH NY 3 5X6 0MM FERRITE AXIAL 62MM 1UH NY 3 5X6 0MM FERRITE AXIAL 62MM 1UH NY 3 5X6 0MM SQE3535 20MH PHY TURN RESONATOR HC49U 20 250MHZ 30PPM...

Page 32: ...P NO 3854VA0146A S1 2004 4 16 ...

Page 33: ...SVC SHEET 3854V A0146A S ...

Page 34: ...Aug 2004 Printed in Korea P NO 3828VD0178B ...

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