Video Circuit - DAEWOO ELECTRONICS DV-F882DY-C Service Manual

3-6. VIDEO CIRCUIT

A.EE MODE Picture N.G
Is video signal input
into pin and of IC151?
12 13
YES
Is E12V supplied at
pin of IC151
16
YES
Is signal output from
pin of IC151?
14
YES
Is signal input into
pin of IC301?
12
YES
Is signal output from
pin of IC301?
16
YES
Is signal input from
ICS01 pin?
10
YES
Is signal output from
ICS01 pin?
8
YES
Check RF out
NO
Check PIF circuit
and A/V jack.
NO
Check ever 12V
NO
Check IC151 and
adjacent circuit.
NO
Check connector,
PCB pattern
NO
Is 5V supplied to pin
and of IC301?
13
Check IC301
pin EE
NO
Check pattern,
connector and Q303.
Check OSD circuit
Check Line out
29
NO
34
YES
H
L
YES
Check
power circuit
Check
IC601 pin
29
Change IC301