Daewoo LA37L1B1LM Service Manual page 16

Hardware Trouble shooting
B. When "No signal" in Y/C signal (S-Video)
1) First check if other inputs are not working
=>If other inputs are not working, replace MAIN PCB
2) Checking waveforms with Color Bar Pattern(Using the oscilloscope)
-Main TP(S-Video_Y) : CC211 near IC202(TOP)
-Main TP(S-Video_C) : RC216 near IC202(TOP)
=>If all TP signal does not appear, replace MAIN PCB.
Y signal(CC211)
C signal(RC216)
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