Samsung R1031GWS YLR Service Manual page 17

8-2 . Problem Checkking And Method Of Pcb
8-2-1 The Part Of Power Source
NO Power On
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?
ⓐ
TRANS
ⓑ
R14
33K
YES
YES
YES
YES
D6,7,8,9
D11
2200UF
R15
33K
CE3
NO
Check The Trans
Check The Diode(D6,7,8,9,11)
NO
And Condenser(CE3)
Exchange IC2(7805) And
NO
Check The
Condenser(CE5)
IC2
ⓒ CE5
7805
470UF
ⓓ
16
16
ⓔ
47
17
48
20