LG TV 21"NORMAL PCB
MAIN IC TDA12135PS/N3/A/AG1
EHT 6174V-6006N
VERTICAL IC STV9302
SOUND IC TDA7297
AV IC LA7958N
VIDEO IC TDA6107AJF/N1
STR W6554A
AFC PROBLEM
1.Discussion AFC circuit theory.
2.Tracing (main ic to fbt) pcb circuit line continuity.
3.Check continuity by buzzer-----
4.No continuity from register R516(12K) to register R412(5.6K)--------copper foil line internally open and disconnect this path.
5.Again tracing from fbt to main ic.
6.A jumper add between two register.
7.Then----
Негізгі бет #Lgtv
Пікірлер: 116