Samsung HT-F4500, Service Manual

Page: 23 / 65

4. Troubleshooting
4.1.5. No image on screen
No No
No
No
Re -Conne ct HDMI ca ble .
No
Cha nge MAIN P CB.
Cha nge MAIN P CB.
No
Cha nge IC1, if you ca nnot
cha nge this , cha nge MAIN P CB.
Ye s
Ye s
Ye s
(1)
Do FT4, FT5 s igna ls
ha ve no proble m?
HCN1 P owe r
(3.3V, 3V, 1.8V)
is OK ?
Che ck P owe r Line 's
compone nts . (s olde ring, e tc)
HDMI Ca ble is
conne cte d corre ctly?
Doe s Logo S cre e n
ha ve proble m?
Doe s HR394 ha ve 5V?
Ye s
Ye s
No ima ge on s cre e n
Change MAIN PCB.
(2)
IC1's re s ona tor(X376)'s
clock is ok?
Ye s
ø Re fe r to wa ve pa tte rn
ima ge of Fig. 4-2.
ø Re fe r to wa ve pa tte rn
ima ge of Fig. 4-3.
Cha nge MAIN P CB.
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