Samsung HT-C550 Service Manual page 67

Troubleshooting
4-1-4 Component (Y, Pb, Pr)
Component (Y, Pb, Pr)
1/2/3
Check if YDAC,CADC
and UDAC output is measured
at the pin 76, 80 and 81 of
IC10 ES8398.
Yes
4/5/6
Check if output is measured
at the pin of 11,13 and 12 of
IC36 THS7374.
Yes
Check if component
video output is measured at
the JA1.
4-10
Check MPEG output
No
measured at the pin 82, 78,
 Refer to wave pattern
image of Fig. 4-7 and
Fig. 4-8.
Check Video switch.
No
 Refer to wave pattern
image of Fig. 4-9 and
Fig. 4-10.
Check JACK Output
No
Check the JA1 connectivity
Check if VDD of 3.3V is
72 of IC10.
Yes
Replace the IC10 IC.
Check if VDD of 3.3V
is measured at the pin
10 of IC36.
Yes
Replace the IC36.
and replace.
No
Check if the pin 7, 8 of
IC23 are 3.3V.
Replace the IC23 IC.
No
Check 3.3V power lines
from IC23 to IC36.
Samsung Electronics