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#Lgtv
Автор: Cosmic Electronics
Загружено: 2021-07-25
Просмотров: 21862
Описание:
LG TV 21"NORMAL PCB
MAIN IC TDA9370PS/N3/A/1747
VERTICAL IC LA7840
VIDEO IC TDA6107JF
SOUND IC TDA2006
STR F6654
RAINBOW PROBLEM
SOLUTION:
1.Power on/Check vertical supply +14V--------ok.
2.Check vertical supply 14V---------- missing.
3.Power off/Check vertical negetive supply fusible resister------ok.
4.Measure vertical negetive supply diode D443(BA159)-----ok.
5.Measure eht pin continuity------PIN 5(-14V supply) & PIN 10(afc) are internlly open.
6.Connection of lg fly back transformer.6174V-6002K
Pin (1,2,3) ,(4,5,6,9,10), (7,8---nc).
7.Open the defective 6174V-6002K.
8.Set new eht.
9.Then------
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