KLV-40ZX1 (serv.man2) - Sony TV Service Manual (repair manual). Page 30

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KLV-40ZX1 (GE)     2-13
2-2-5. NO PICTURE, NO SOUND
1) TUNER INPUT
Check OSD
OK
Replace
the DB1C Board
DB1C Board
Check LINK
OK
NG
NG
Pairing and
setting place
OK
NG
Replace
the BC Board
BC Board
Replace
the LF Block
(LFTX)
OK
Replace
the LF Block
(LFTX)
Replace
the H1C Board
H1C Board
OK
NG
OK
Replace
the BC Board
BC Board
Check
video input screen
NG
OK
OK
NG
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