Panasonic VIERA TH-50PV500E Service Hints page 14

Trouble Shooting
Power LED
Blink Trouble
LED
5
times
blink < 37",
42"
HD
(37/42PV500E,B)>
Trouble
Mode
and
Defective
Board
Trouble
Mode
Defective
Board
P5V SOS
D, P, C,
SC,
SS
Board, Panel
(1C)
Disconnect
SC20 and SS32.
<After
Power
SW
ON,
Power
comes
up ?
Yes
^
How
to find
the defective board
No
(D or P or
C
or Panel
NG)
No(PorDNG)
Disconnect
all
of
D31-D34. Power
SW
OFF.
Disconnect SC20
(or D20).
^
^-Disconnect
P25
(or
D25
W
No
After
Power
SW
ON,
P25's 7 or 9 pin Short
Power comes
up
? (*1) with
GND
?
TYe
s
|p Boardl
(SC
or
SS NG)
Yes
(
c
or Panel
NG)
|
Keep
Disconnect
SC20
(or D20).
|
No
Connect D31and D32. (Cl or
(Disconnect
D33
and D34) C2
or^
Panel
After
Power
SW ON
Power comesup
Yes
(C3
or
C4
or
Panel NG)
NG)
In
addition,
Disconnect D32.
(Connect only D31.)
'After
Power
SW
ON,
Power comes up
?
Yes
T. (C2
or Panel
NG)
In
addition,
Disconnect
all flexible
cables
with Panel from
C2
board
lex.
42PX500 CA5-CA8).
After
Power
SW
ON.
Power comes
u|
rVes
No
No
(Cl or Panel
NG)
Power
SW
OFF.
No
Disconnect
P25
(or D25).s.
D25's 7 or
9 pin
Short
with
GND
?
Vies
Id Boardl [p Boardl
In addition,
Disconnect
all
flexible cables
with Panel from
Cl
board
No
ies
up
%
|
Panel
After
Power
SW
ON,
Power comes
up ?
Yes
C2
Board
T
Panel
|
Cl Board
In
addition,
Connect D34
^Disconnect only D33.)
No(C4
or Panel
NG)
<
After
Power
SW
ON,
5
Power comes up ?
"
T"
Yes (C3
or
Panel NG)
<
Connect SC20.
Disconnect SS32.
After
Power
SW
ON,
Power comes up ?
Tves
No
Power
SW
OFF.
Disconnect
all
flexible
cables
with
Panel from C3 board
^
No
^ex. 42PX500 CB5-CB8).
20pin
of IC(*2) in
C3
Short
with
GND
?
Power
SW
OFF.
Disconnect
all
flexible cables
with Panel from
C4 board
^
No
(ex.
42PX500
CB1-CB4).
"
20pin of IC(*2)
in
C4
Short
with
GND
?
Tves
|C4 Boardl
[panell
Yes
SS
Board
SC
Board
C3
Board Panel
(*1
)
The reason
of disconnect
SC20
is
to prevent
6 times
SOS
caused
by disconnect
D31-D34.
(*2)
Check one
of the following 1C.
1C
in
C3 board
:
IC7301
or
IC7302
or
IC7303
or
IC7304
1C
in
C4
board
:
IC7401 or IC7402 or IC7403 or IC7404
Power Supply and
Protection
Circuit
Check
Point Location