Lg tv picture ok but no sound | Lg crt tv no sound picture ok. 

Lg tv picture ok but no sound
LG CRT TV 14''ULTRA SLIM PCB.
MAIN IC TDA11105PS/N3/3/AN4.
FBT 6174V-6006N.
VERTICAL IC TDA4863.
SOUND IC TDA7297SA.
STR W6753.
SOLUTION:
1.Power on /Check sound ic TDA7297SA all pin voltage.
2.Sound ic pin No.7 low/abnormal voltage.
3.Chek pin No.7 supply registor input and output voltage---------registor R605(4K7) input voltage ok but output voltage low--------maybe registor or sound ic defective.
4.Power off/Open R605(4K7) registor.
5.Measure the registor-------registivity high.
6.Then set new 4K7 registor.
7.Power on/follow the next steps-------

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