Image Abnormal Display - Olevia 237T Service Manual

TITLE
LCD TV For 237-T11

4-4 Image Abnormal Display

Trouble Condition
Image abnormal display
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).
Service Manual
No picture through
component
No picture through
composite
No picture through
S-Video
No Picture through
Tuner
No picture through
HDMI
No picture through
VGA
Company Confidential-DRAFT
Doc No.
Version
Page
Check Item
Step1 ：
1. Check video cable
connection
2. Check video cable
3. Check source settings
4. Check TV input
OK
：
Step2
1. Check System Board
component L52, L49 L53, L50,
L54, L51 for a short.
2. Check System Board
component L65, L68 for a short
3. Check System Board
component L59, L61 L62, L60
for a short
4. Check System Board
component U103 for a short
5. Check CN9 broken? , D41
lighting? & U60 EDID OK?
：
Step1
Fail
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.
Fail
OK
Step2 ：
Check component J4 on
system board for a short
& component U26 that
stores EDID information
for a short.
SM_237-T11_19Nov07
1.2
16/72
Replace Material
1. Reconnect cable
Fail
2. Replace cable
3. Change source
settings
4. Change TV input
Fail
Replace System
board
1. Secure connection
2. Change PC resolution to
fit the timing table
3. Replace VGA cable
Replace System
board
Test
Finish
Test