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1. NO PICTURE(SOUND OK)
Waveform of Digital Board
IC100 # 48 ?
YES
Waveform of Digital Board
IC106 R/G/B OUT #48/1/2?
YES
Waveform of Digital Board
IC106 # 38/36/34 ?
OK
Waveform of Digital Board
P108 #R/G/B_OUT?
OK
Waveform of CPT SOKET
CATHODE(RK/GK/BK) ?
2. NO SOUND (PICTURE OK)
<AV1,2,3,Component 1 INPUT>
Waveform of Digital Board IC100
#60~63 (AV1,2)
#65~68(AV3, COMP)
at each Mode ?
Waveform of MAIN1
IC601 #1,2(L) 14,15(R) ?
YES
Waveform of MAIN1
IC601 #1,2(L) 14,15(R) ?
All manuals and user guides at all-guides.com
TROUBLE SHOOTING
Check MAIN1 R159 Waveform.
YES
NO
Check Q152
NO
NO
NO
NO
Check around
NO
each Jack
NO
YES
NO
Check around
IC100
NO
Check Tuner(TU101) VIDEO output
Check around IC100 & 106
Check around IC106
Check around Q123,Q125,Q127
Check IC900
Waveform of
MAIN1 SIF ?
YES
Waveform of
Digital IC100
#53 ?
Check around IC100
- 16 -
CVBS Signal ?
(2Vpp)
Check
NO
TU101
& IF Assy.
Check
NO
around
IC100
YES
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