Daewoo 14Q1 - Manual (Page 41)

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3. NO VERTICAL SCANING(ONE HORIZONTAL LINE ON SCREEN)
CHECK / REPLACE
P401 & DY ]
CHECK VERTICAL Vcc
+16.5V AT PIN3
& +48V AT PIN6
OF I301(TDA 8356)
CHECK SIGNAL
AT PIN1 & PIN2
OF I301 [REFER TO
WAVEFORM ]
CHECK / REPLACE
D401(BYV95C)
D409(BYV95C)
R303(1W 15K)
CHECK / REPLACE
R304, R305
C304, R307
CHECK SIGNAL
AT PIN7 OF I301 CHECK / REPLACE
CRT
CHECK OUTPUT
WAVEFORM AT PIN46,
PIN47 OF I501
CHECK / REPLACE
I301
CHECK / REPLACE
I501
OK
NORMAL
NORMAL
NORMAL
NORMAL
ABNORMAL
ABNORMAL
ABNORMAL ABNORMAL