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Trouble Shooting
Terms:
IR: Infrared Receiver
RC: Remote Control
IR logic: IR blink with RC action IR logic: IR blink with RC action
LVDS: Low Voltage Differential Signal, output from processor and input for panel
O/C: Open Cell, panel with source board
BL: Back Light,light source for panel module g,g f p
LB: LED (Light Emitting Diode) Bar, light source for BL module
VBL: Voltage for Back Light (before Boost)
VLED: Voltage for LED (after Boost)
OVP: Over Voltage Protection
OSD: On Screen Display
AMP: Amplifier
1 No power
No power LED, RC or Key can not turn on TV. Power LED no light/no change.
No power
Fuse & rectification
YES
bridge OK?
NO
Change NG
components.
Check other
possibility/
Replace main
board.
23
Power Control
Power IC/
Unit NG.
MOSFET OK?
Check +12V &
Check LLC parts
+24V for backlight
Check DC-DC/
Change main board
NO
YES
Change NG
components/
Replace main
board.
END
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