LG FM776F Service Manual page 18

NO VIDEO
(POWER INDICATOR ON)
CHECK
POWER INDICATOR
GREEN or ORANGE?
GREEN
CHECK
D712 ANODE
(-160V)?
YES
CHECK
G1 VOLTAGE?
(-45 ~ -55V)
YES
CHECK
CDT HEAT
VOLTAGE? (6.3V)
YES
TROUBLE IN
CDT
3. NO RASTER
ORANGE
NO
NO
NO
- 18 -
DPM MODE
(NO H and/or V SYNC)
TROUBLE IN
D712
TROUBLE IN
Q704
TROUBLE IN
D941, Q942, Q941