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No Picture/No Sound - LG PC-63A Service Manual

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NO PICTURE/NO SOUND

(RASTER OK)
no
Is the CVBS signal at pin14
Check/Replace
IC101.
Go to NO PICTURE Block.
Is the Auto programme
operation normal?
yes
of IC101 normal?
yes
NO SOUND Block
no
Check the voltages
5V, 12V and 33V of Tuner.
OK
2
Check I
C bus lines.
(SDA, SCL)
OK
Check/Replace TUNER.
no
Check/Replace
ZD101, 102,
5V, 12V and 33V Lines.

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