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41
6.
Troubleshooting
for IFP UHD series
6.1 Abnormal display
6.2 No image
* for additional instructions of replacing LVDS (V-By-
One) cable download “Internal LVDS video cable
replacement instructions” file from
https://www.triumphboard.com/support/repair-service/
Abnormal display
(blurred screen)
Display of all channels is
abnormal
Re-upgrade Android
system
Change TV main
board
NO
YES
NO
Check the connection of V-
BY-ONE cable or try to
replace V-BY-ONE cable
Replace display
screen
NO
Blurred screen only
under OPS channel
Replace internal
HDMI cable
Replace PC module
YES
NO
( Regular stripes)
regular patterns or
large-area dark spots or
vertical line on screen
The screen is bad and
need to replace
YES
(Screen flickers)
Set light sensor on
OSD menu to off
Measure voltage of the
power panel; Whether
output voltage of power
board is stable
Replace TV power
board
Replace screen
NO
NO
NO
Replace
screen
(Mist on screen)
YES
The phenomenon is
normal, which is caused
by inside and outside
temperature difference
of glass. Under normal
conditions, the
phenomenon will
disappear after being
used for 3-5 days
Replace TV main
board
Replace OPS adapter
board
NO
NO
Upgrade Firmware
NO
Power indicator can't be
turned on
Ensure the power
cable is connected and
plugged into a good
known wall outlet
YES
Check that whether
there is 5VSB voltage
in certain pin of TV
power board
Swap power cable and power
outlet for known good.
NO
YES
Replace the KEY&IR board to
see if it is ok
YES
Replace the TV power board
Replace the TV main board
Check that whether
the power board
cables is well
NO
YES
NO
Replace the TV main board
and KEY&IR board
NO
Red power indicator on,
can't turn green
No image
Could the display be turn on by
remote and key controller?
YES
Replace KEY&IR board
NO
Replace the TV power board
Replace TV main board
NO
NO
Power indicator turn green
but no image
Check that whether there is
backlight
YES
Re-plug and swap V-BY-ONE
cable
YES
If the T-con is replaceable,
replace the T-con
Replace TV main board
NO
NO
Replace TV power board
Replace TV main board
Replace the screen
Replace the screen
NO
NO
NO
NO
Replace double frequency
board(only 98")
NO
Replace constant current
board(only 65")
NO
