Panasonic TH-42PX500U - Troubleshooting Flowcharts; No Picture or Partial Picture

Troubleshooting
No Picture or Partial Picture
NOTE: Please utilize this diagnostic flowchart after confirming that all input signals have
the same problem.
Check
the
D
Board.
Is there a
picture in any
portion of the
screen?
No
Yes
Is the
SC Board LED
illuminated or is the
waveform at TPSC1
ok? See Ref. *1 on
page 66.
Yes
No
Is the
SC Board LED
illuminated or is the
waveform at TPSS1
ok? See Ref. *2 on
page 66.
No
Yes
The SC Board is
probably
defective.
SS Board is probably
defective.
The D
Board is
probably
defective.
Is there
70V (VDA) at pins 1
and 2 of the
connector
SS12?
No
Check the
P board.
Yes
Is the
picture black or
monochromatic
/ noisy?
Is the
picture noisy o
r
mono-
chromatic?
No
Go to
step 3.
Go to
step 2.
Go to
step 1.
Check the
DG or
D Board.
Yes
Monochromatic
or nois
y
Enter the
Self-Check
mode and
check if
“Panel”
is OK?
Monochromatic
Yes
No
Is the
panel
on?
63