Daewoo DTH-14Q1FS Service Manual page 39

§ NO PICTURE (RASTER AND SOUND OK)
OK
CHECK/REPLACE THE COMPOSITE
SIGNAL INPUT STAGE
AND VIDEO PARTS OF I501
OK
CHECK THE VCC VOLTAGE AT
#40 OF I501
OK
CHECK R, G, B SIGNAL
OUTPUT AND PA501
OK
CHECK/REPLACE +7.6V
LINE OF I501
§ NO RASTER (SOUND OK)
OK
CHECK H.V AT
ANODE OF CRT
OK
CHECK CONNECTOR
ASS' Y P401 AND PA501
OK
CHECK/REPLACE I501
CHECK WHETHER THE BRIGHT & CONTRAST ARE
CONTROLLABLE OR NOT?
CHECK/REPLACE THE
EACH PIN OF I501
CHECK THE SIGNAL INPUT
CIRCUIT OF I501
NG
REPLACE THE SIGNAL
INPUT CIRCUIT
HEATER ELEMENTS OF CRT
ARE LIGHTING OR NOT?
NG
CHECK/REPLACE
T402
37
CHECK THE VOLTAGE OF
OK
CHECK/REPLACE +185V
OK
NG
CHECK THE SUPPLY
VOLTAGE OF HEATER
OK
CHECK/REPLACE
THE WIRING
PA501 AND P401
OK
CHECK/REPLACE HORIZ.
DRIVE TRANS(T401)
OK
CHECK/REPLACE Q401/Q402
NG
+185V ON CRT BOARD
NG
OK
REPLACE T402
NG
CHECK/REPLACE
R817 AND T402