AOC LE50M3571/69, Руководство по обслуживанию

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3. Protection or without light (refers to the disappearance of image several seconds
after the emergence of image)
4. White panel
The image disappeared immediately after the
emergence; check the plug of high-voltage switch board
for striking sparks and poor contact
No problems identified, replace high-voltage
board; if the fault remains, check the contact
line of back light of LCD for any damage, and
replace LCD board. If there is spark striking,
replace high-voltage board
YES NO
White panel refers to the back light works
without visible signal and just show white
screen. Check the voltage of socket for flat
cable connecting the main board to screen
for abnormality
Check the interface between main board
and connect line for any looseness,
shedding,
if no abnormity existed,
replace LCD screen
Check the power supply chip of
control screen or replace main
board
YES NO
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