LG-GOLDSTAR CB-29H40E Repair Manual

NO SOUND
(PICTURE OK)
(No NICAM or FM Sound)
(No AM Sound)
NOCheck whether SoundIncorrect
Check the Audio signal of
system of MENU OSD is
pin25 of IC604 normal
correct or not
Set correct Sound system
Check/Replace IC604YesCorrect
YesNO
Check the Audio signal ofIs the SIF signal of pin24
pin44 of ICN01 normalof IC604 normal
Check/Replace IC101
NO
Yes
NO
Are the Audio signal of
Check AM line
pin24, 25 of ICN01 normal?
Check/Replace XN01,
YesICN01
NO
Are the Audio signal of
pin1, 9 of IC601 normal
YesCheck RO LO lines.
NO
Check the voltage of
Q601 Base.
0V
NO
Check/Replace Q601,Are the Audio signal of
IC101, Q602, D601,pin4, 6 of IC601 normal?
D602, R612, R614
Check the voltage of pin7
Yesof IC601
NO
Check/Replace C614, C615,
D603, D604, Speaker
Yes
Check/Replace IC601
Check/Replace F802,
D814, L801