LG T910BU Service Manual page 16

NO VIDEO
(POWER INDICATOR
GREEN or AMBER)
CHECK
POWER INDICATOR
GREEN or AMBER ?
GREEN
CHECK
SCREEN CONTROL
KNOB OF FBT
OK
CHECK
VOLTAGE AT
D924/D926 CATHODE (190V)
D923 CATHODE (80V)
IC904 OUT (12V)
D921 CATHODE
(6.3V)?
YES
CHECK
IC401 (MICOM) PIN 6
5V (HIGH), IC801 PIN 10
12V (HIGH)?
YES
TROUBLE IN
IC401 (MICOM),
IC801
3. NO RASTER
AMBER
MIN.
(Counter-clockwise)
NO
NO
- 16 -
TROUBLE IN
P302 SIGNAL CABLE
ROTATE SCREEN
CONTROL KNOB TO
CLOCKWISE
TROUBLE IN PRIMARY
CIRCUIT OF T901
TROUBLE IN
CDT SOCKET, BOARD