Doc No.
Version 1.0
TITLE
Service Manual
LCD TV For 232-S12
Page 9/44
4-4 Image Problems
No picture through
component
Replace System
board
OK
1. Reconnect cable
2. Replace cable
3. Change source
settings
Fail
Image Problems
Fail
No picture through
composite
No picture through
S-Video
No Picture through
Tuner
No picture through
HDMI
No picture through
VGA
Replace System
board
Fail
1. Secure connection
2. Change PC resolution to
fit the timing table
3. Replace VGA cable
OK
Test
Finish
Trouble Condition Check Item Replace Material Test
Step1：
1. Check if VGA cable
is loose.
2. Make sure the PC is
set to a resolution the
TV supports
3. Check both ends of
VGA cable for broken
or loose pins.
Step2：
Check component J21 on
system board for a short &
component E6 that stores
EDID information for a
short.
Step2：
1. Check System Board component
L29, L30,L31 for a short.
2. Check System Board component
FB10,L20 for a short
3. Check System Board component
FB11, FB12, L16, L17 for a short
4. Check System Board component
L23 ,FB53, FB54 for a short
5. Check J2 Con. broken? E5
EDID OK?
Step1：
1. Check video cable
connection
2. Check video cable
3. Check source settings
Fail
Note: Before
proceeding confirm
that Power cable is
connected and that
proper voltage is
being fed to TV.
(Check power
switch located next
to power input and
confirm that it’s
ON.)
Note: Before proceeding make
sure the PC is not in standby or
hibernation mode. Make sure
the video card is secure and not
loose (AGP or PCI slot).
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