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9-2. Main board failure check
No picture but have
sound
Check whether the normal
work of the backlight
Yes
Check if there is +12V at
Pin38 in CN202
Change LVDS
wire
Check if there is
No
+3-5V at Pin2-3 in
J20
No
Yes
Replace the
U49
Replace Main board
Still having
problems
- 52 -
Yes
Replace Power supply
No
Replace Main board
Change Panel
Service Manual
Model No.:
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