AOC LE32M1570, Service Manual

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3. No light (Boot the image flash protection, but you can see very dark images on the screen)
YES NO
YES NO
YES NO
4. No picture (the screen light shadow, backlight is bright, but no picture display)
YES NO
NO YES
Check the LVDS socket on mainboard (40P sockets 2, 4, 6, 8,
and 10 pins, with +12V voltage or not)
Check whether the screen
interface loose or fall off,
or screen OC circuit is not
good (change screen must
change the same type of
OC)
Check the CMOS tube is connected with
magnetic beads with or w12V
Bead bad or middle
copper foil through
hole open circuit CMOS tube (ME2325)
bad or control circuit
triode bad
Boot the image flash protection, but you can see very dark images on the screen,
check the voltage for light bar on is ok or not
Check the lamp plugs without ignition, lights on
the lgith bar in the power moments are all bright
or dark phenomenon, such as replacement light Check the output of light bar is in normal or not
(32" is about 40V, the size is bigger and light bar
is more, the voltage is higher).
If the light bar voltage output is in normal, most
is the light bad or loop circuit impassability
The output voltage of the light bar is abnormal. Check
the 24V voltage of the power supply is normal
Check whether the backlight control circuit
is bad or replace the backlight control IC
If there is no power for 24V voltage, the power
supply part or the load is short circuited
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