Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung LCD TV LW17E34C opr09AA6
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>> Download opr09AA6 documenatation <<Text preview - extract from the document5 Troubleshooting
5-1 No Power
Does proper DC 14 V appear at No
Check SMPS PCB and adapter.
DC jack connected to CN12?
Yes
Does proper DC 5 V No
Check IC11.
appear at Pin 2 of IC11?
Yes
Does proper DC 14V No
Check IC11.
appear at Pin 1 of IC11?
Yes
Does proper DC 3.3 V appear at No
Check IC14.
Pin 3 of IC14?
Yes
Does proper DC 2.5 V appear at No
Check IC109 and IC17.
Pin 4 of IC109 and IC17?
Yes
Check IC23.
LW15E33C/LW17E34C 5-1
5 Troubleshooting
5-2 No Video (PC Signal)
Power indicator is green.
Yes
Does the signal appear No
at IC134, IC135, IC136 Check CN11.
of R, G, B input?
Yes
Does the clock pulse No
Check X21 and related circuit of X21.
appear at X21?
Yes
Does the clock pulse appear at
output of 15" No
Check related circuit of IC32.
17"?
Yes
Does the clock pulse appear at
No Replace 15"
output of 15"
17".
17"?
Yes
Replace LCD panel.
5-2 LW15E33C/LW17E34C
5 Troubleshooting
5-3 No Picture (TV, Video, S-Video)
Check Pin 55, 56 (S-Video)
and Pin 52 (VCR) and Pin 74 No Check CN41 (Tuner) and
and Pin 53 (RF-CVBS) CN26 (VCR connector).
of IC401 (VSP9407).
Yes
Does the signal appear at No Check IC401 (VSP9407)
RA33, RA34, RA311, RA312? and related circuit.
Yes
Does signal appear at
15" No
17" Check IC32 and related circuit .
of related IC32?
Yes
Check IC61, 62 and
15"
17".
LW15E33C/LW17E34C 5-3
5 Troubleshooting
5-4 No Sound
Does the signal appear at
Pin 67 (Tuner sound signal) and No Check CN11 (PC conector)
Pin 57, 56 (PC sound) and Pin 51, 50 and CN26 (VCR connector).
(VCR sound) of IC53 (MSP3421G)?
Yes
Does the signal appear at Pin 27, No
Check IC32 and related circuit.
28 of IC53 (MSP3421G)?
Yes
Does the signal appear No
Check IC55 (Audio amp) and related circuit.
at L53~L56?
Yes
Replace the speaker.
5-4 LW15E33C/LW17E34C
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