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NO LOGO Screen(Component 480i)
accords with cable connection
Clock, data and
SYNC output from U1 ?
(EL1, VRN1~6, VR30,31)
Y,Pb,Pr signal output from
VIC7 ? (pin39.38.37)
Y,Pb,Pr signal output from VIC3 ?
Y,Pb,Pr signal is OK from
Defective Component cable
Pr(Color-bar)
Samsung Electronics
Video selection
No
and TV mode ?
Yes
No
Yes
No
Yes
No
(pin25,21,17)
Yes
No
VIC3 to J5 ?
Yes
Pb(Color-bar)
Check the Video select, cable
connection, TV mode
U1 soldering error
Check VIC7 power and
Reset(pin33; 'High') input
Check VIC3 power input
Check soldering of peripheral
devices
Y(Color-bar)
Trouble Shooting
5-9
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