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4. No display
Yes
Check the LVDS cable
Yes
Panel Vcc = 12V?
Yes
Replace the Panel
No display (LED Red)
Check TV is under control and power
on/off by remote control and power key?
Yes
Check the backlight is
"On"?
No
Reinsert or replace the
LVDS cable
No
Replace the main board
No
Check the B/L
signal is available?
Yes
Power board output＝12V?
Yes
Replace the Panel
30
No
Replace the main board
No
Replace main board
No
Replace the power board
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