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TCL LCD37VSH, Service Manual

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TCL LCD37VSH Service Manual Download Page 19

37’’ LCD TV Color Monitor                                                                        TCL LCD37VSH 

 

19

5. Repair Flow Chart   

5.1 No Power (No LED indicator) 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

NG 

Check power cord and board interface 

Plug in power cord and interface 

OK 

Check F901, BD901, D901, D902 

NG 

Replace F901 or BD901 or D910 or D902 

OK 

Check IC901 

NG

Replace IC901 

OK 

NG 

OK 

Check Q901 

Replace Q901 

OK 

Check the circuit 

OK 

NG

Replace T901 

Check T901 

NG 

Check Q903, IC902 and relative circuit

Replace Q903, IC902 

Check Q906, IC905 and relative circuit

Summary of Contents for LCD37VSH

Page 1: ...29 7 1 Main Board 29 7 2 Power Board 33 7 3 Key Board 36 7 4 IR Board 36 7 5 Audio Board 37 8 Block Diagram 38 8 1 Main Board 38 8 2 Exploded View 39 9 Schematic Diagram 40 9 1 Main Board 40 9 2 Power...

Page 2: ...37 LCD TV Color Monitor TCL LCD37VSH 2 Revision List Version Release Date Revision Instructions TPV Model A00 Sep 26 2006 Initial Release E376ATNCD4TLNP...

Page 3: ...60000 Hrs at 4 5mA LCD Panel Color Temperature 6500K 9300K Input support definition 640 480 60Hz VGA Function Audio input 3 5 Mini Jack for PC Audio TV System PAL B G D K I NTSC M TV Function Video sy...

Page 4: ...the volume CH Press or to browse through the TV channels which are not erased MENU Press repeatedly to display OSD menu DISPLAY 1 Display Channel number when use RF input 2 Display input source when...

Page 5: ...front will32 RED 37 illuminate amber Menu Press this button to display or exit the OSD menu CH When the OSD menu appears press these two buttons to elect the item you want to execute when no OSD menu...

Page 6: ...ble include VIDEO SETTING AUDIO SETTING OPTION SETTING CHANNEL SETTING VIDEO SETTING 1 PICTURE User can select PERSONAL VIVI STANDARD MICD if selected except PERSONAL item Contrast brightness Saturati...

Page 7: ...with Menu background 4 SELLP TIMER Use this button to set a time period after which the TV will enter into stan dby mode The time period can be 0 15 30 45 60 90 120 minutes The timer will begin to cou...

Page 8: ...NNEL SWAP Swap current channel with others 7 CHANNEL SKIP If set to On this channel will be shielded When you press the Channel Up Down buttons you cannot enter this channel But when you press the dig...

Page 9: ...al input in TV AV S Video and HDTV modes the screen will become blue If set to On the screen will become blue If set to Off the screen will display a snowy picture when in TV signal mode and become bl...

Page 10: ...nect to the PC mainframe VGA interface Connect the VGA signal cable supplied with the TV to the D sub interface at the rear of the TV as in Figure 1 Digital interface Connect the DVI signal cable to t...

Page 11: ...camcorder to the Audio Input ports left and right Video 1 Input Connect the video signal source PC DVD player Laser Disc player videocassette recorder or camcorder to the Video 1 Input interface Audi...

Page 12: ...al output 8 Video Audio Output The TV can output the current TV signal or AV signal to other devices through the video output and the audio output ports Note When the signal source currently being pla...

Page 13: ...he connector information is as follow 1 6 11 15 5 10 15 Pin Color Display Signal Cable Pin No Description 1 Red Video 2 Green Video 3 Blue Video 4 Not used 5 GROUND 6 Red Video Ground 7 Green Video Gr...

Page 14: ...rmal FULL Dots Lines Hz kHz 4 3 16 9 720 400 70 1 31 5 NEG POS YES YES YES NO 59 9 31 5 NEG NEG YES YES YES NO 75 0 37 5 NEG NEG YES YES YES NO 640 480 72 0 38 77 NEG NEG YES YES YES NO 60 0 37 9 POS...

Page 15: ...7 LCD TV Color Monitor TCL LCD37VSH 15 4 Mechanical Instructions Step Figure Description Remove the back cover Remove the screws marked in red and green Remove the stand Remove the screws marked in re...

Page 16: ...37 LCD TV Color Monitor TCL LCD37VSH 16 Remove the shield Remove the screws marked in red...

Page 17: ...37 LCD TV Color Monitor TCL LCD37VSH 17 Remove the boards Remove the screws marked in red and disconnect the connector or wire Remove the plates Remove the screws marked in red...

Page 18: ...37 LCD TV Color Monitor TCL LCD37VSH 18 Remove the bezel Remove the screws marked in red panel...

Page 19: ...rface Plug in power cord and interface OK Check F901 BD901 D901 D902 NG Replace F901 or BD901 or D910 or D902 OK Check IC901 NG Replace IC901 OK NG OK Check Q901 Replace Q901 OK Check the circuit OK N...

Page 20: ...an not start LED indicator yellow NG Repair the key board OK Check 5V_SB NG Return to 5 1 OK Check PWR_ON signal Check main board power supply and U402 NG Check I2 C communication OK Check key board C...

Page 21: ...source NG Check LVDS cable NG Reset LVDS cable OK Check 12V and 5V power supply NG Return to 5 1 OK Check main board power supply OK Check U402 U401 NG Replace U402 U401 OK Check I2 C communication O...

Page 22: ...stem setup Check the source Reset source NG Check signal filter circuit Replace the filter or resistance RF signal Check Tuner Replace Tuner Check LVDS cable Check input Replace LVDS cable Check panel...

Page 23: ...gnal filter circuit NG Replace the filter circuit SIF signal Check TV system setup Check Tuner Replace Tuner AV S video HDMI PC signal Replace U502 U503 U504 U601 Check Earphone jack Replace the Earph...

Page 24: ...H 24 5 6 Key Board OSD is unstable or not working Is Key Pad Board connecting normally Connect Key Pad Board Is Button Switch normally Replace Button Switch Y N N Is Key Pad Board Normally Replace Key...

Page 25: ...tern1 on Chroma2225 Chroma7120 s lens must aim at the center of Pattern1 showed on the LCD TV s screen The distance of Chroma7120 s lens and the center of screen is 20cm 1cm ENTER FACTORY After orient...

Page 26: ...ey on Chroma7120 to switch xyY mode Use black sleeve on Chroma7120 s lens to ensure no external ray Set Pattern104 on Chroma2225 Adjust SCALAR RB GB BB value to make sure the brightness is the lowest...

Page 27: ...37 LCD TV Color Monitor TCL LCD37VSH 27 Fig 4 Fig 5 Fig 6...

Page 28: ...nge the input signal to 0 white level performance Firstly press the brightness from 50 to 0 and make sure the Y is not changed Secondly change the input signal to 32 GRAYS performance and make sure th...

Page 29: ...37 LCD TV Color Monitor TCL LCD37VSH 29 7 PCB Layout 7 1 Main Board...

Page 30: ...37 LCD TV Color Monitor TCL LCD37VSH 30...

Page 31: ...37 LCD TV Color Monitor TCL LCD37VSH 31...

Page 32: ...37 LCD TV Color Monitor TCL LCD37VSH 32...

Page 33: ...37 LCD TV Color Monitor TCL LCD37VSH 33 7 2 Power Board...

Page 34: ...37 LCD TV Color Monitor TCL LCD37VSH 34...

Page 35: ...37 LCD TV Color Monitor TCL LCD37VSH 35 7 3 Key Board 7 4 IR Board...

Page 36: ...37 LCD TV Color Monitor TCL LCD37VSH 36 7 5 Audio Board...

Page 37: ...37 LCD TV Color Monitor TCL LCD37VSH 37 8 Block Diagram 8 1 Main board...

Page 38: ...37 LCD TV Color Monitor TCL LCD37VSH 38 8 2 Exploded View...

Page 39: ...1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 G G 3 3V_SB C210 0 1uF C223 0 1uF R203 22 1 16W 12VP C202 100pF R207 75 1 16W C212 0 1uF C205 22uF 16V 5V_SB R206 75 1 16W R216 22 PC_R RxD C219 0 47uF 50V 5V_SB L2...

Page 40: ...MD26 MD27 MD28 MD29 MD30 MD31 DQM0 DQM1 DQM2 DQM3 DQS0 DQS1 DQS2 DQS3 MA11 MA10 MA9 MA8 MA7 MA6 MA5 MA4 MA3 MA2 MA1 MA0 MCK0 MCK0 CS0 CS1 RAS CAS MVREF WE CLKE BA0 BA1 MPUGPIO0 MPUGPIO1 VDDR VSSR VDDM...

Page 41: ...3 3V_SB P_50 C324 33pF T XOUT1 R326 NC C344 0 1uF TXOUT0 PAVSS1 R310 0 1 16W TV3265W 4C B SVP EX256_2 AOC Top Victory Electronics Co Ltd Custom 4 11 Monday April 17 2006 Title Size Document Number Re...

Page 42: ...301 0 01uF DQ21 MD21 C309 0 01uF DQ13 DQS0 MA7 DQS2 MCLK0 MD2 DQ25 R305 15 MD25 DQ13 DQ23 DQ30 DQ11 MA8 MA1 C311 0 0047uF R304 15 DQ1 DDQS0 R301 51 1 16W DQ17 DQ0 MD30 DQ21 MA11 DDQS0 R306 15 DQ1 DDQS...

Page 43: ...Q7 Q5 Q0 Q1 Q2 Q3 Q4 Q6 R422 100 ISP_SW 2 R467 NC 5V 1_CPU A16 R456 NC TP402 A2 A7 RST_H 3 A1 E_PAGE A4 RN400 33 1 8 2 7 3 6 4 5 VGAVS 2 A5 R471 100 1 16W RST_H 3 R417 4 7K 5V 1_CPU Reset EX52 3 3V_SB...

Page 44: ...7uF 16V 0805 C5005 4 7uF 16V 0805 C596 0 001uF R537 100 1 16W C597 47uF 16V R543 100 1 16W C598 470pF C561 4 7uF 16V 0805 V20SW C5004 4 7uF 16V 0805 C544 0 0033uF CP500 470pF 1 2 3 4 5 6 7 8 C568 0 0...

Page 45: ...4403 1 2 3 4 8 7 6 5 S1 S1 S1 G1 D1 D1 D1 D1 1 R708 3K 1 10W R710 3K 1 10W R709 22K 1 16W Q709 PMBS3904 3 3V_SB C706 47uF 16V R713 47K 1 16W C721 22uF 16V R704 7 5K 1 R715 22K 1 16W C714 10uF 16V C722...

Page 46: ...F 16V VL1_8 C791 47uF 16V C738 0 1uF 3V3S C752 0 1uF VL1_8a 5V_SB VD3_3 C729 22uF 16V C744 10uF 16V C733 22uF 16V C753 0 1uF C730 0 1uF VDDM C732 0 1uF Sil9011 1 8V Power C742 47uF 16V L721 NC C740 0...

Page 47: ...11 1 2 3 4 8 7 6 5 S1 S1 S1 G1 D1 D1 D1 D1 t NR901 SCK055 1 2 C900 1000PF 250V R989 JUMPER C972 470UF 25V R926 20K 1 10W VCC2 R900 390K 1 8W R911 330 1 10W C927 1500PF R915 330K 1 8W Q921 PMBS3904 C91...

Page 48: ...umber Rev Date Sheet of C148 10uF 16V C145 10uF 16V 5V_A COMP_R1 J102 JACK 2 3 5 6 8 9 1 4 7 L121 600 OHM AGND AV2_L_S R131 10K 1 16W AV2_L_S CH_SEL1 COMP_R1 A_I MODE_1 3 AGND C134 10uF 16V AV_2 2 L11...

Page 49: ...BS_SEL_1 SW2 C125 470pF AGND C101 0 1uF R160 NC R157 0 1 10W AV_1 1 C126 470uF 16V L107 600 OHM CH_SEL4 1 R126 100K 1 16W CVBS_SEL_I 0 AGND 1 SW1 0 CN101 JACK 5 6 4 AGND VIDEO_OUT 1 0 AGND C128 68pF R...

Page 50: ...TH4 C104 10uF 50V R116 47K 1 16W S1 PIN6 AGND AGND AGND HIGH SD1 1 4 R101 10K 1 16W L106 600 OHM SYSTEM AGND C100 0 0015uF AGND AGND C112 100pF C114 100uF 16V AGND AGND SC1 1 4 D101 LL4148 GS08 B G R1...

Page 51: ...HM C617 1uF 16V X600 18 432MHz C618 10uF 16V C624 330pF C636 470pF R609 100 1 16W R602 120 1 16W C640 0 001uF C602 10uF L600 600 OHM AGND AGND AGND C628 0 1uF C632 330pF C609 56pF U601 MSP3450 1 2 3 4...

Page 52: ...95T8014 10 36 WIRE HARNESS 095T8014 12562 WIRE HARNESS 095T8014 13610 WIRE HARNESS 095T8014 14 40 WIRE HARNESS 095T8018 3514 LVDS CABLE 098TR7MW4NETLF REMOTE CONTROL FUHUA FOR TCL 0D1T 940 6120 SCREW...

Page 53: ...Q41T320165414A manual Q41T780065424A warranty card 015T6184 1 Kensington lock 033T4980 GM 1L CABLE CLIP 034T1855AGM 2L REAR COVER 0Q1T 330 6128 CR3 SCREW EFPFLA1P E FRAME BOARD 033T4977 GN 1L BUTTON F...

Page 54: ...F M 450V KINGNICHI FB906 071G 55 21 FERRITE BEAD 071T 55 30 FERRITE BEAD 4 0 2 3 L903 073T 174 70 L 120UH L903 073T 174 70 S CHOKE L907 073T 174 83 L LINE FILTER LITAI L907 073T 174 83 T LINE FILTER T...

Page 55: ...61T153M109 59 MOFR 1 OHM 5 3W C548 067T215C102 4K LOW ESR DC 1000UF 25V L701 073T 253137 ER CHOKE COIL BY EROCORE SCB 03 L705 073T 253137 ER CHOKE COIL BY EROCORE SCB 03 L506 073T 253158 L CHOKE COIL...

Page 56: ...LD Q901 057T 667 45 FET 2SK3697 01 FUJI Q901 057T 667 48 TRA STW25NM60N TO 247 ST D902 093T 220 22 DIODE YG972S6R TO 220F FUJI D902 093T 220 23 DIODE FMX G26S TO 220 SANKEN 0M1T1730 12128 CR3 SCREW Q9...

Page 57: ...067T215L471 6N KY35VB470M L 10 20MM FB904 071T 55 29 BEAD FB903 071T 55 29 BEAD D901 093T 5241T52T 1N5406 D904 093T1020 752T UF4003PT D916 093T1020 752T UF4003PT D907 093T1100 1052T BA159GPT D906 093T...

Page 58: ...T0805333 RST CHIPR 33 KOHM 5 1 8W R114 061T0805334 RST CHIPR 330 KOHM 5 1 8W R999 061T0805360 1F RST CHIPR 3 6 KOHM 1 1 8W R907 061T0805683 RST CHIPR 68 KOHM 5 1 8W R990 061T0805753 RST CHIPR 75 KOHM...

Page 59: ...05105 22 CHIP 1UF 25V X7R 0805 C927 065T0805152 22 CHIP 0 005UF 25V X7R 0805 C916 065T0805221 31 220PF 50V NPO C952 065T0805221 32 CHIP 220PF 50V X7R 0805 C918 065T0805331 32 CHIP 330PF 50V X7R 0805 C...

Page 60: ...CHIP PMBS3904 BY PHILIPS Q404 057T 417 4 CHIP PMBS3904 BY PHILIPS Q403 057T 417 4 CHIP PMBS3904 BY PHILIPS Q301 057T 417 4 CHIP PMBS3904 BY PHILIPS Q300 057T 417 4 CHIP PMBS3904 BY PHILIPS Q204 057T 4...

Page 61: ...000 CHIP 0OHM 1 16W R4004 061T0603000 CHIP 0OHM 1 16W R423 061T0603000 CHIP 0OHM 1 16W R536 061T0603000 CHIP 0OHM 1 16W R700 061T0603000 CHIP 0OHM 1 16W R780 061T0603000 CHIP 0OHM 1 16W R335 061T06031...

Page 62: ...77 061T0603103 CHIP 10KOHM 1 16W R527 061T0603103 CHIP 10KOHM 1 16W R546 061T0603103 CHIP 10KOHM 1 16W R554 061T0603103 CHIP 10KOHM 1 16W R555 061T0603103 CHIP 10KOHM 1 16W R558 061T0603103 CHIP 10KOH...

Page 63: ...M 1 16W R419 061T0603330 CHIP 33OHM 1 16W R420 061T0603330 CHIP 33OHM 1 16W R4009 061T0603330 CHIP 33OHM 1 16W R559 061T0603331 RST CHIPR 330 OHM 5 1 10W R560 061T0603331 RST CHIPR 330 OHM 5 1 10W R55...

Page 64: ...4 7KOHM 1 16W R4013 061T0603472 CHIP 4 7KOHM 1 16W R4018 061T0603472 CHIP 4 7KOHM 1 16W R402 061T0603472 CHIP 4 7KOHM 1 16W R4028 061T0603472 CHIP 4 7KOHM 1 16W R4029 061T0603472 CHIP 4 7KOHM 1 16W R3...

Page 65: ...HIP 0 01UF 16V X7R C424 065T0603103 32 CHIP 0 01UF 50V X7R C410 065T0603103 32 CHIP 0 01UF 50V X7R C402 065T0603103 32 CHIP 0 01UF 50V X7R C315 065T0603103 32 CHIP 0 01UF 50V X7R C310 065T0603103 32 C...

Page 66: ...22 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C223 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C318 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C339 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C342 065T0603104 1...

Page 67: ...32 CHIP 0 1UF 50V X7R C459 065T0603104 32 CHIP 0 1UF 50V X7R C460 065T0603104 32 CHIP 0 1UF 50V X7R C468 065T0603104 32 CHIP 0 1UF 50V X7R C469 065T0603104 32 CHIP 0 1UF 50V X7R C550 065T0603104 32 CH...

Page 68: ...32 CHIP 0 1UF 50V X7R C333 065T0603104 32 CHIP 0 1UF 50V X7R C334 065T0603104 32 CHIP 0 1UF 50V X7R C335 065T0603104 32 CHIP 0 1UF 50V X7R C336 065T0603104 32 CHIP 0 1UF 50V X7R C340 065T0603104 32 C...

Page 69: ...0 47UF 16V Y5V C580 065T0603474 17 CHIP 0 47UF 16V Y5V C587 065T0603474 17 CHIP 0 47UF 16V Y5V C589 065T0603474 17 CHIP 0 47UF 16V Y5V C3001 065T0603680 31 CHIP 68PF 50V NPO C399 065T0603680 31 CHIP...

Page 70: ...4121003XT EC 85 CHIP 10UF M 16V C463 067T 4121003XT EC 85 CHIP 10UF M 16V C450 067T 4121003XT EC 85 CHIP 10UF M 16V C437 067T 4121003XT EC 85 CHIP 10UF M 16V C419 067T 4121003XT EC 85 CHIP 10UF M 16V...

Page 71: ...CHIOP BEAD 150 OHM L200 071T 56G151 B BEAD 0805 150 OHM L206 071T 56G151 B BEAD 0805 150 OHM L207 071T 56G151 B BEAD 0805 150 OHM L410 071T 56G301 EA CHIP BEAD 300 OHM 0805 L502 071T 56G301 EA CHIP B...

Page 72: ...IPS 8BI U105 056T 652500 WT6854 512 Q101 057T 417 4 CHIP PMBS3904 BY PHILIPS Q103 057T 417 4 CHIP PMBS3904 BY PHILIPS RN103 061T 125473 8 RST CHIP AR 8P4R 47 KOHM 5 1 16W RN100 061T 125473 8 RST CHIP...

Page 73: ...CHIP 0OHM 5 1 10W R124 061T0805750 RST CHIPR 75 OHM 5 1 8W R604 061T1206620 0F RST CHIPR 620 OHM 1 1 4W C168 065T0603101 31 CHIP 100PF 50V NPO C601 065T0603101 31 CHIP 100PF 50V NPO C110 065T0603101...

Page 74: ...65T0603680 31 CHIP 68PF 50V NPO C133 065T0603680 31 CHIP 68PF 50V NPO C132 065T0603680 31 CHIP 68PF 50V NPO C128 065T0603680 31 CHIP 68PF 50V NPO C104 067T 312100 7 SMD EC 10UF 50L 85C C610 067T 31210...

Page 75: ...IP BEAD 600OHM 0603 TB1608 L114 071T 59B601 EA CHIP BEAD 600OHM 0603 TB1608 L106 071T 59B601 EA CHIP BEAD 600OHM 0603 TB1608 L102 071T 59B601 EA CHIP BEAD 600OHM 0603 TB1608 L101 071T 59B601 EA CHIP B...

Page 76: ...1 5MM RIVET NR901 006T 31502 1 5MM RIVET C910 006T 31502 1 5MM RIVET C911 006T 31502 1 5MM RIVET L902 006T 31502 1 5MM RIVET L911 006T 31502 1 5MM RIVET T903 006T 31502 1 5MM RIVET IC911 056T 158 12...

Page 77: ...COATED J925 095T 90 23 TIN COATED J913 095T 90 23 TIN COATED J912 095T 90 23 TIN COATED J911 095T 90 23 TIN COATED J910 095T 90 23 TIN COATED J908 095T 90 23 TIN COATED J907 095T 90 23 TIN COATED J906...

Page 78: ...37 LCD TV Color Monitor TCL LCD37VSH 78 PCB 715T1852 3 POWER BOARD PCB...

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