SAMSUNG TV 21"NOMAL PCB
MAIN IC TDA11136PS/N3/3(T-M3PIN-003)
EHT FOK14A001
VERTICAL IC LA78141
SOUND IC TDA7297SA
VIDEO IC TDA6107AJE/N1
AV IC CD4052BE
STR W6750F
1.Power on/Led not glowing.
2.Check eht supply voltage----ok.
3.Check driver supply voltage-----low.
4.Check 8v reg.transistor(C2073) input voltage------ok.
5.Check 8V reg.transistor(C2073) output voltage------ok.
6.Check 3.3V reg.transistor Q802(D863) input voltage-------ok.
7.Check 3.3V reg.transistor Q802(D863) output voltage-------ok.
8.Check memory ic supply voltage------ok.
9.Check 5V main ic pin No.2--------ok.
10.Check 8V main ic pin No.3-------ok.
11.Check 5V main ic pin No.22--------ok.
12.Check 3.3V main ic pin No.33-------ok.
13.Check 3.3V main ic pin No.40--------ok.
14.Check 3.3V main ic pin No.43-------ok.
15.Check 5V main ic pin No.54---------ok.
16.Main ic all supply voltage ok but problem where?
17.Power off/Check ohms main ic pin No.2------high.
18.Check ohms main ic pin No.3--------high.
19.Check ohms main ic pin No.22--------high.
20.Check ohms main ic pin No.33------low.
21.Check ohms main ic pin No.40-------Low.
22.Check ohms main ic pin No.43--------low.
23.Open main ic pin No.33,40,43.
24.Check ohms between ground and pin No.33 PCB point------high.
25.Check ohms between ground and pin No.33-------low.
26.That means main ic short and defective confirm.
27.Then--------
Негізгі бет #Samsungtv
Пікірлер: 114