12
5.3 No Display
Replace main board
Replace the power board
CN416
37/38/39/40= 12V?
Replace the Panel
No display
(LED No power)
Replace the main board
Check the backlight is
“On”?
Check the LVDS cable
Reinsert or replace the
LVDS cable
Replace the main board
Replace the Panel
No
Yes
Yes
No
Yes
No
No
Yes
Yes
No
Yes
No
Power board
CN921 Pin 1/2/3/4/5=24V
CN922 Pin 1/2/3/4/5=24V
CN926 Pin 5/6/7=24V
CN925 Pin 4/5/6=12V
Check TV is under control and power
on/off by remote control and
power key?
CN422 Pin 13/14 =5V
CN405 Pin 1/2/3 =12V?
CN405 Pin 5/6/7 =24V?
Summary of Contents for TH-55LFV50U
Page 13: ...13 6 Disassembly and Assembly Instructions 10 7 7 12 13 ...
Page 14: ...14 1 Remove the screws to remove the rear cover A B ...
Page 15: ...15 B B 14 15 16 ...
Page 16: ...16 2 Remove the Key Board and IR board C C 11 ...
Page 19: ...19 7 Remove the Fan and Sensor Board 8 Remove the BKT H F C 2 2 G J ...
Page 20: ...20 9 Panel 1 I ...
Page 23: ...23 9 Exploded View and Replacement Parts List 9 1 Exploded View ...
