Daewoo DN-W551 Service Manual page 25

3.3.1. Composite Video Trouble Service Flow Chart
Composite Video Trouble
Check Composite Video
Output Signal
OK
Check "SETUP" Item
OK
Check CP3 Signal
OK
Check R107 D12 D14
Q16 L36 Signal
OK
Check U2 (Pin175) Signal
NG
Replace U2
Daewoo DN-W551 Service Manual
NG
NG
NG
NG
24
Replace Composite Video Parts
See "User Manual"
Replace CP3
Replace R107 D12 D14
Q16 L36