Read LG 26LG3100 (CHASSIS:LD91M) Service Manual online
Standard Repair Process Detail Technical Manual
Voltage and speaker checking method
when there is no audio
when there is no audio
C. Audio error_No audio/Normal video
A21
Established
date
Revised
date
Error
symptom
Content
LCD TV
A21
Check Procedure at No Sound
①
②
① Check 15V connector contacting point statement of main board.
② Measure 15V input voltage supplied by Power Board (remove connector and check it out if there is no input
voltage)
voltage)
③ Put SPK terminal into tester RX1 -> when touching GND and output terminal, if make Cheuk
Cheuk sound, it is OK.
2009. 7 .30
②
③
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