Samsung HT-TZ315 Service Manual page 31

4-1-3 No Analog Video Output
 COMPOSIT (VIDEO OUT)
COMPOSIT (VIDEO OUT)
Check if VDAC
output is measured at the pin 100 of
MIC1 ES8391.
Yes
Check if output
is measured at the pin 33 of
VIC1 LA73054.
Yes
Check if composite video
output is measured at the JP6.
Check the JP6 connectivity
and replace it if necessary.
Samsung Electronics
Check MPEG Output.
No
3.3V is measured at the pin 1, 14, 30,
 Refer to wave pattern
image of Fig. 4-6.
Check Video Switch.
No
5V is measured at the pin 1, 24, 34
Check JACK Output.
 Refer to wave pattern
image of Fig. 4-7.
Check if VDD of
46, 62, 77 of MIC1.
Yes
Replace the MIC1 IC.
Check if VDD of
of VIC1.
Yes
Replace the VIC1.
Troubleshooting
No
Check if the pin 10, 11 of
MCON2 are 3.3V.
No
Check if the pin 3 of CON3 is
5V.
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