Рет қаралды 56,888
SAMSUNG TV 14''ULTRA SLIM PCB
SMD IC TDA12156H/N3/3
FBT AA26-00317
VERTICAL IC LA78040
SOUND IC TDA7269
STR W6754F
PROBLEM:POWER LED BLINKING.
SOLUTION:
1.Power on/Check EHT supply voltage------fluctuate & high----led blinking.
2.Power off/Add 100W bulb to EHT supply.
3.Power on/Again check EHT supply------bulb glowing up and down.
4.Set is going to standby and then release automatically continue.
5.Check horizontal driver voltage------fluctuate.
6.Check 3.3V------ok.
7.Check 5V regulator voltage-----ok.
8.Check memory ic supply voltage------ok.
9.Check memory ic SCL voltage---------missing.
10.Check memory ic SDA voltage-------ok.
11.Tracing SCL voltage.
12.Power off/Open SCL supply register R916(4K7).
13.Measure register 4K7------internally open.
14.Set new register 4k7.
15 Then---------