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LG 32LS3800 Service Manual
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LG 32LS3800 Service Manual

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LED LCD TV
SERVICE MANUAL
CHASSIS : LB21F
MODEL : 32LS3800
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67440103 (1206-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
32LS3800-TC
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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Questions and answers

Lateef Kayode Bello
February 16, 2025

Can this model of tv work with indoor digital antenna?

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1 comments:
Mr. Anderson
February 16, 2025

Yes, the LG 32LS3800 TV can work with an indoor digital antenna. The manual mentions an "ANTENNA/CABLE IN" port, which indicates that the TV can receive over-the-air broadcasts through an antenna. However, signal quality may vary depending on the location and strength of the broadcast signals.

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Summary of Contents for LG 32LS3800

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LED LCD TV SERVICE MANUAL CHASSIS : LB21F MODEL : 32LS3800 32LS3800-TC CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67440103 (1206-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    ADJUSTMENT INSTRUCTION ..............8 TROUBLESHOOTING GUIDE ..............13 BLOCK DIAGRAM .................. 20 EXPLODED VIEW .................. 21 SCHEMATIC CIRCUIT DIAGRAM .............. - 2 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    An other abnormality exists that must be corrected before the receiver is returned to the customer. - 3 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    - 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 5 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely crimp the leads of replacement component around notch at stake top. - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    4 System : PAL, SECAM, NTSC, PAL60 Component Input Y/Cb/Cr, Y/Pb/Pr HDMI Input HDMI-DTV/DVI Supporting HDCP For My Media(Movie/Photo/Music List) and SVC - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 VESA(SVGA) 1024*768 @60Hz 48.363 60.004 65.000 VESA(XGA) 1152*864 @60Hz 54.348 60.053 80.002 VESA 1360*768 @60Hz 47.712 60.015 85.5 VESA(WXGA) - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 8: Adjustment Instruction

    If "Error" is displayed, check connection between computer, jig, and set. (3) Click "Read" tab, and then load download file(XXXX.bin) by clicking "Read". filexxx.bin - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 - Enter Service Mode by pushing "ADJ" key, - Enter Internal ADC mode by pushing "►" key at "7. ADC Calibration". - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 White Balance End ▪ Start download by selecting ‘Start’ and pressing ‘OK’ key. <Caution> Never connect HDMI when EDID download - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 HDMI2 1. Tool Option2 HDMI3 LG TV 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 (LG TV) 2. Tool Option3 3. Tool Option4 e. Checksum: Changeable by total EDID data.
  • Page 12 3000Vac/100mA/1min (OQA) or 3000 Vac / 100 mA / 1 sec (MP). - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 13: Troubleshooting Guide

    Check Inverter Control & Error Out Check Power Board or Module P401 18 pin : High P401 24 pin : low Change Module - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 Replace L3703 L3703 Check Tuner 1.8V Power Replace IC3703 . IC3703 2 pin : 1.8V Check Mstar LVDS Output - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 Check input signal format. Is it supported? Check Component Cable for damage or open conductor. Check COMP_DET Signal Check Mstar LVDS Output - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 Replace the defective IC or re-download EDID data I2C Signal Check JK802 Check HDMI_DET(HPD) Check HDMI Signal Check Mstar LVDS Output - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 Replace connector Check Connector & P501 if found to be damaged. Check speaker resistance Replace speaker. and connector damage. - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 Check Tuner 1.8V Power Replace IC3703 . IC3703 2 pin : 1.8V Follow procedure ‘8. All source audio’ trouble shooting guide. - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 Check Power B/D. (P201 : BAT DET, AC DET, A/D, STATUS signal) Check Main B/D. (P401 : CHG ON/OFF Signal) - 19 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 20: Block Diagram

    BLOCK DIAGRAM - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 21: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 22 2012.04.20 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. FLASH/EEPROM/GPIO Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. POWER,IN/OUT,H/W OPT Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR POWER_LARGE R414 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 2011/11/02 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR IR/CONTROL THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 10/08/13 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR USB_OCP_DIODE THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 2011.10.04 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 2011/08/13 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR RS232C_PHONE THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 2011/11/02 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR LVDS_LARGE THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 2011/06/03 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR DDR_256 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 2011.10.11 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR TUNER_NON_EU THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32 2011.10.04 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. NTP-7500 Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 2011.11.02 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. REAR_NON_EU_L Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Serial FLASH Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR MSTAR DEBUG_4PIN THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

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