Read LG 55SL8500-ZA (CHASSIS:LD91K) Service Manual online
- 22 -
16. All Source no Audio Problem
Check The Speaker
Check Speaker Cable
YES
Check P700 Cable
YES
NO
Replace MAIN B’D IC 701
YES
MAIN B’D
L705 Pin #1
L704 Pin #2
L704 Pin #2
PWM Signal ?
Replace Speaker
NO
Replace Speaker Cable
NO
* If headphone is connected,
Speaker sound doesn't work.
Speaker sound doesn't work.
Replace MAIN B’D IC803
NO
YES
MAIN B’D
L700 = 1.8V
MAIN B’D
Check R722, R720, R721
Signal
YES
Replace MAIN B’D IC100
NO
Replace MAIN B’D IC701
NO
17. Digital TV No Audio Problem
Digital TV Video OK ?
YES
Replace MAIN B’D IC 100
18. Analog TV No Audio Problem
MAIN B’ D R1216 Signal (SIF)
Replace MAIN B’D IC1200
NO
Analog TV Video OK ?
YES
Check MAIN B’D
C231 Signal (SIF)
NO
Replace MAIN B’D IC 100
YES
YES
MAIN B’ D C1269 Signal (SIF)
Replace MAIN B’D IC1203
NO
Click on the first or last page to see other 55SL8500-ZA (CHASSIS:LD91K) service manuals if exist.