How to repair lg crt tv eht supply voltage low | eht supply voltage drop.
Автор: Cosmic Electronics
Загружено: 2022-04-17
Просмотров: 57908
LG TV 14''ULTRA SLIM PCB.
MAIN IC TDA11105PS/N3/3/AN4.
FBT-6174V-6006N.
VERTICAL IC TDA4863.
SOUND IC TDA7297SA.
STR W6754.
PROBLEM: Lg crt tv eht supply voltage low.
SOLUTION:
1.Power on/Check eht supply voltage-------low.
2.Power off/Open eht supply voltage jumper.
3.Power on/Again check eht supply voltage------low.
4.Power off/At first open registor R815(91K) one lid.
5.Measure registor R815(91K)---ok.
6.Measure registor R816(91K)---ok.
7.Measure registor R842(20K)----ok.
8.Resolder the registor R815(91K).
9.Now open KIA431.
10.Set new KIA431.
11.Power on/Again check eht supply voltage----low---KIA431 ok.
12.Power off/Open registors R843(39K) & R844(4.7K) one lid.
13.Measure registor R843(39K)----ok.
14.Measure registor R844(4.7K).
15.Then---------
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