Panasonic VIERA TH-50PV500E Service Hints page 22

Trouble Shooting
Power LED
Blink
Trouble
LED
10 times
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< 500 series
(TH-37/42/50PV500E,B) >
Trouble
Mode
and
Defective
Board
Trouble
Mode
Defective Board
(Possibility)
Tuner Power
SOS
PA,
P,
other Boards
(
PA, P > other Boards)
How
to find the defective
board
When
Power
SW
ON,
DC14V
output
No(14VNG)
at
PA1
0's (or
PI
0's)
1
or
2
or 3 pin
before
Shutdown
?
Yes (MAIN
or
SUB
Voltage
NG)
Disconnect PA10.
..Power
SW
ON.
'DC14V
output at PIO's
1
or 2 or 3
pin'
Before
Shutdown
?
~~~^Yes
|
PA
Board
No
>~
Hp Board
|
Disconnect PA30
or
H30.
<After Power
SW
ON,
Power comes
up ?
Yes
(H
or
TA
or
Z
or
GS NG)
XV(*1) or
DV NG)
No Connect PA30-H30.
.
(PA
or
DG
ori
nw^^^^
i
^
Remove
DV
Board.
1
After
Power
SW
ON,
Power comes up ?
Tves
No
>
- |PV500B| »'
1
Remove
DG
board.
DG20's
following pins(*2)-|
Short
with
GND
?
No
Yes
|
DV
Board]
Connect PA30-H30.
n
0
Remove XV
and
DV
Board.
After
Power
SW
ON,
Power comes
up ?
^Yes
(XV or
DV NG)
Remove DV
Board.
Install
XV
Board.
After
Power
SW
ON,
Power comes
up ?
DG
Board
PA
Board
<
^ a
No
DV
Boardl
|XV Board
No
Remove TA
board.
I>IU
Disconnect H52.
<After Power
SW
ON,
>
i H
—
Z
or
»<After Power
SW
ON,
Power comes up ?
^
Power comes
up ?
'
y'cs
^es
No
(H or
Z
NG)
Disconnect H50
or
Z50.
<After
Power
SW
ON,
5
Power comes
up ?
~
Yes
No
TA
Board
GS
Board
O'-/!
I
1^0
U)_i
|Z
Boardl
H
Board
(*1)
XV
board
:
PE500V
only
(*2)
Check DG20's
Pin
Number
Pin No. Voltage (Normal Condition)
7
MAIN5V
9
SUB5V
15
MAIN9V
17
SUB9V
18
SUB9V
22 MAIN3.3V
23
MAIN3.3V