Samsung WF-F1256 - PCB Power Source Troubleshooting

37
6-2-1 The Part Of Power Source
YES
YES
NO
YES
NO
YES
NO Power On
Check The Trans
Check The Diode
(D11,D12,D16,D17,D18)
And Condenser(CE3)
Exchange IC3(7805) And
Check The
Condenser(CE5)
The Voltage Of
Between
ⓐ
and
ⓑ
Is
As Big As 12V?
The Voltage Of
Between
ⓒ
and
ⓓ
Is
As Big As 12V?
The Voltage Of
Between
ⓔ
and
ⓓ
Is
As Big As 5V?
NO
7805
D11,12,16,17
D18
CE3
CE5
IC3
ⓐ
ⓑ
ⓒ
ⓓ
ⓔ
30
57
72
75
13
31
73
74
TRANS
2200UF
470UF
6-2. PROBLEM CHECKING AND METHOD OF PCB