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Flatron F900B
Service manual
Troubleshooting Guide - LG Flatron F900B Service Manual
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NO POWER
(POWER INDICATOR OFF)
CHECK
FUSE OK?
(F901)
YES
CHECK
D901
BRIDGE DIODE?
YES
CHECK
C905(+) VOLTAGE
145VDC at 110V input
310VDC at 220V input
YES
CHECK
D924, D926, D923,
D922, D921, D920 ?
YES
TROUBLE IN
Q912, Q913, Q915, Q914,
IC903, IC904, Q902
TROUBLESHOOTING GUIDE
1. NO POWER
NO
NO
NO
NO
- 15 -
TROUBLE IN
FUSE (F901)
TROUBLE IN
BRIDGE DIODE
(D901)
TROUBLE IN
IC901
TROUBLE IN
D924, D926, D923,
D922, D921, D920
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