LG StudioWorks 500E Service Manual page 13

NO VIDEO
(POWER INDICATOR ON)
CHECK
POWER INDICATOR
GREEN or ORANGE?
GREEN
CHECK
D712 ANODE
(-157V)?
YES
CHECK
G1 VOLTAGE?
(-75 ~ -15V)
YES
CHECK
CDT HEAT
VOLTAGE? (6.3V)
YES
TROUBLE IN
CDT
3. NO RASTER
ORANGE
NO
NO
NO
- 13 -
DPM MODE
(NO H and/or V SYNC)
TROUBLE IN
D712
TROUBLE IN
Q799
TROUBLE IN
D941, Q942, Q941