Daewoo RD-400 - Manual (Page 20)

6. Trouble Shooting Guide
6. VIDEO OUTPUT Abnormal
Yes
Check if the
Output of IC501
is ok?
OK
VIDEO Abnormal of
Composite
Yes
Replace IC501
Check the
output of IC481
is ok?
No
No
Check the
output of Jack
is ok?
Yes
Yes
No
Check Filter Circuit.
Check Crystal
is ok?
Replace Crystal, XC501.
No
Check the
control of Select
is ok?
Check Power Supply Circuit.
Check Control Line between
IC510 : Pin12, 15
No
Replace IC481
Yes
18
Audio Part