Samsung LW17E34C 5 Troubleshooting
LW15E33C/LW17E34C 5-1
5 Troubleshooting
5-1 No Power
Does proper DC 14 V appear at
DC jack connected to CN12?
Check SMPS PCB and adapter.
Yes
No
Does proper DC 5 V
appear at Pin 2 of IC11?
Check IC11.
Check IC23.
Yes
No
Does proper DC 14V
appear at Pin 1 of IC11?
Check IC11.
Yes
No
Does proper DC 3.3 V appear at
Pin 3 of IC14?
Check IC14.
Yes
Yes
No
Does proper DC 2.5 V appear at
Pin 4 of IC109 and IC17?
Check IC109 and IC17.
No
5 Troubleshooting
5-2 LW15E33C/LW17E34C
5-2 No Video (PC Signal)
Power indicator is green.
Does the signal appear
at IC134, IC135, IC136
of R, G, B input?
Check CN11.
Yes
Yes
No
Does the clock pulse
appear at X21?
Check X21 and related circuit of X21.
Yes
No
Does the clock pulse appear at
output of <RA35~RA39, RA310>15”
<RA35~RA39, RA310,
RA313~318>17”?
Check related circuit of IC32.
Yes
No
Does the clock pulse appear at
output of <R611~R620>15”
<R611~R620, R61~R69, R610>17”?
Replace
<R611~R620>15”
<R611~R620, R61~R69, R610>17”.
Yes
No
Replace LCD panel.
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