Read Panasonic TH-55LFV5U / TH-55LFV5W Service Manual online
12
5.3 No Display
Check the P/S and
ON/OFF
signal is available?
Replace main board
Replace the power board
Panel Vcc Pin
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?
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