Olevia 232-S12, Service Manual

Page: 6 / 44

Doc No.
Version 1.0
TITLE
Service Manual
LCD TV For 232-S12
Page 6/44
4. Trouble shooting flow chart
4-1 Display Problems
Note: Refer to the Wiring Diagram during troubleshooting for a visual of inter-connections
when indicated by this symbol
.
Trouble Condition Check Item Replace Material Test
Display Problems
Abnormal display
1. No video Image
2. Video noise
3. Display flashes
4. Abnomal color
Bright spots
Dark spots
Backlight uniformity
Light leakage
Spot & Simi
Ghosting
Dust & Scratch
1.Replace Power
Module if voltage
is missing.
2.Replace System
board if voltage is
missing.
Step1
：
1. Check for a loose video
cable connection
2. Check video cable
3. Check source settings
4. Check TV input
5 Ch
k S Ch l
1. Reconnect cable
2. Replace cable
3. Change source
settings
4. Change TV input
5. Run auto Scan
Test
Finish
Step3
：
1. Check System board (5Vs)
CN4-pin1 to ground = 5V,
2. Check System Board
CN4-pin3 to ground = 5V
CN5-pin2 to ground = 12V
Step2
：
Check for a loose or broken
connection between Con.J28
from system board to Panel
LVDS connection.
Secure connection
or replace the
LVDS wire
Step1:
Check damage to
panel
Replace Panel
Fai
l
Fai
l
OK
OK
Fai
l
Fai
l
Step2:
Check for a loose or
broken connection
between Con.J28 from
system board to Panel
LVDS connection.
Fai
l
Replace LVDS
connect wire
OK