Samsung HT-C553, Руководство по обслуживанию

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Samsung Electronics 4-7
Troubleshooting
4-1-3 Composit (Video out)
Composit (Video out)
Check 3.3V power lines
from IC23 to IC36.
No
Check if the pin 7, 8
of IC23 are 3.3V.
Check if VDD of 3.3V
is measured at the pin 82,
78, 72 of IC10
No
No
Check if VDD of
3.3V is measured at the pin
10 of IC36.
Yes
1
Check if VDAC output is
measured at the pin 77 of
IC10 ES8398
Check if output
is measured at the pin 14
of IC36 THS7374
Yes
Replace the IC23 IC.
2
Check if composite video output is
measured at the JA1.
Replace the IC10 IC
No
Yes
Replace the IC36.
Yes
No
Check MPEG output
Check Video switch.
Check JACK Output
Check the JA1 connectivity
and replace.

Refer to wave pattern
image of Fig. 4-5.

Refer to wave pattern
image of Fig. 4-6.