No change
(LED keep lit)
LED blink (except TC- model)
LED off (TC- model)
Try the “
LCD Panel
Test Mode”
Check if the Backlight is lit.
(open the back cover and
check from back side)
No lit
Lit
Disconnect A15/16/19
connecter(FFC cable to
Panel). Check if voltage
SRV-12V (PNL12V) in A
board
No
Yes
(12V)
Check if voltage 24V/32V(*)
at SRV-LED in P board
Yes
24V/32V(*)
No
Replace P board
Replace LCD Panel
(Backlight part)
Replace A board
Replace A board
Replace A board
Replace LCD Panel
(T-CON part)
Is the power LED situation
changed after pushing the
button for entering Test
Mode?
If entering the test mode,
the Power LED will Blink(except TC- model)
or OFF (TC- model).
Patterns are
displayed
No Picture
(*) The DC level is different by the LCD panel.
50
Troubleshooting for No Picture and No OSD (Power LED is lit = No blinking)
Refer to the block diagram “Troubleshooting for LED Blinking (1 time blink )”
Confirm(Clean) the flat
cable connection
(between A board and T-CON
board of LCD Panel)
LCD Module
A
IC8000
F
15
V
12V
IC5300
A02
1
3
5
SRV-12V
A19
1-4
PNL12V
T-CON
Panel_VCC_ON2
