LG 26LH2000 Service Manual
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Check the SCART Cable YES Replace MAIN B’D IC1103 MAIN B’D R250 (Right Sound) R251 (Left Sound) signal ? NO YES Replace MAIN B’D IC 100 Speaker Audio OK YES Check MAIN B’D JK1101 Replace MAIN B’D JK1101 NO YES Check the Trouble Shooting Guide Related to Audio Problem NO Making Revision 2009. 2 . 1 28/34 LCD TV Symptom AV2 No Audio Out Problem 26~42LH2000 32~47LH3000/LH4000
Check the Headphone Cable YES Replace MAIN B’D IC700 MAIN B’D R237 (Right Sound) R238 (Left Sound) signal ? NO YES Replace MAIN B’D IC 100 Speaker Audio OK YES Check MAIN B’D JK700 or JK701 Replace MAIN B’D JK700 or JK701 NO YES Check the Trouble Shooting Guide Related to Audio Problem NO Making Revision 2009. 2 . 1 29/34 LCD TV Symptom Headphone No Audio Problem 26~42LH2000 32~47LH3000/LH4000
Check the SPDIF Cable YES Check MAIN B’D R230 PWM Signal ?Replace MAIN B’D IC 100 Speaker Audio OK YES Check MAIN B’D JK403 Replace MAIN B’D JK403 NO YESNO Check the Trouble Shooting Guide Related to Audio Problem NO Making Revision 2009. 2 . 1 30/34 LCD TV Symptom SPDIF No Audio Problem 26~42LH2000 32~47LH3000/LH4000
Check MAIN B’D JK405 Pin #1 5V ? NO Check MAIN B’D R848 12V ? Check that the USB Memory & HDD are supported by Spec (Refer to User Manual’s USB cautions) YES Check MAIN B’D R801 5V ? Replace MAIN B’D IC402 YES NO Replace MAIN B’D IC808 YESYES Replace MAIN B’D IC 100 Check MAIN B’D JK405 OK ? YES NO Replace MAIN B’D JK405 Making Revision 2009. 2 . 1 31/34 LCD TV Symptom USB No Connect Problem 32~47LH4000
Check IR B’D P1 Wafer & ConnectorCheck MAIN B’D P1304 Wafer & Connector YES NO Replace it YES Replace IR B’D Making Revision 2009. 2 . 1 32/34 LCD TV Symptom Remote Control Problem 26~42LH2000 32~47LH3000/LH4000
Check IR B’D P1 Wafer & ConnectorCheck MAIN B’D P1305 Wafer & Connector YES NO Replace MAIN B’D IC100 IR B’D IC1 Pin #3 Voltage 4V ? NO NO Replace it YES Replace IR B’D IC1 NO Replace MAIN B’D IC100 Making Revision 2009. 2 . 1 33/34 LCD TV Symptom Remote Control Problem 19~22LH2000
Check IR B’D P1 Wafer & ConnectorCheck MAIN B’D P1304 Wafer & Connector YES YESNO Replace itReplace IR B’D Making Revision 2009. 2 . 1 34/34 LCD TV Symptom Intelligent Sensor Problem 32~47LH4000