Рет қаралды 35,971
LG 21"ULTRA SLIM PCB
SMD IC TDA12156H/N3/3/AT4
ET6174V-1595
VERTICAL IC LA78040
SOUND IC LA42102N
VIDEO IC TDA6107JF
STR W6554A
WIDTH LESS
SOLUTION:
1.Power on/Entering the service mode(press-panel menu+remote menu)-----select EW-WI and change it data-----no result & no response width-----software ok and check circuit section.
2.Check voltages(width ic302 KIA4558P)-----supply ok pin8 and others pin voltage high.
3.Check voltages(Q302-D2059)-----high.
4.Check voltages (Q303-A1274)-----high.
5.Power off/Measure transister(Q302-D2059)---ok.
6.Measure transister (Q303-A1274)--------ok.
7.Measure R319(57K),8pin ic pin No.7-----high registivity.
8.Open register R319(57K).
9.Set new reister 57K.
10.Then----