LG T710BH Service Manual - Page 15
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NO VIDEO (POWER INDICATOR ON) CHECK POWER INDICATOR GREEN or AMBER? GREEN CHECK D712 ANODE (-160V)? YES CHECK G1 VOLTAGE? (-55V~ -15V) YES CHECK CDT HEAT VOLTAGE? (6.3V) YES TROUBLE IN CDT 3. NO RASTER AMBER NO NO NO - 15 - DPM MODE (NO H and/or V SYNC) TROUBLE IN D712 TROUBLE IN Q799 TROUBLE IN D941, Q942, Q941
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3. NO RASTER
NO VIDEO
(POWER INDICATOR
ON
)
CHECK
POWER INDICATOR
GREEN or AMBER?
CHECK
D712 ANODE
(-160V)?
CHECK
G1 VOLTAGE?
(-55V~ -15V)
TROUBLE IN
D712
TROUBLE IN
Q799
DPM MODE
(NO H
and/or
V SYNC)
AMBER
NO
GREEN
YES
NO
CHECK
CDT HEAT
VOLTAGE? (6.3V)
TROUBLE IN
D941, Q942, Q941
YES
NO
TROUBLE IN
CDT
YES