Panasonic VIERA TH-50PV500E Service Hints page 18
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Also See for VIERA TH-50PV500E:
- Operating instructions manual (48 pages) ,
- Service manual (189 pages) ,
- Operating instructions manual (48 pages)
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Trouble Shooting
Power LED
Blink
Trouble
LED
7
times
blink
<37"/42">
TH-37/42PA50E, PE50B)
1
TH-37/42PV500E.B)
3
Trouble
Mode
and
Defective
Board
Trouble
Mode
Defective
Board
(Possibility)
SC
floating
voltage
SOS
SC, SU, SD,
D,
P Board
(SC,
SU,
SD
>
D, P)
How
to find
the defective
board
No (SC
or
Dor
PNG)
Disconnect
and
SD
from
SC
(*1).
=
After
Power
SW
ON,
Power comes
up
?
Connect
SU
and
!
to
SC
board.
—
No(15V NG)
\
m
0
Power
SW
ON.
Disconnect
P23
(or
SC23).
,DC15V
output
SU
and
SD
r^\
a
t
TP1
5V
on
SC
before
Shutdown
?
^Power
SW
ON.
^DC15V
output
at
P23's
1
or
2
pin"
before
Shutdown
?
Yes
(
SU
or
SD
NG)
Connect
SU
to
SC.
Disconnect
SD
from
SC(*
1
)^No
After
Power
SW
ON,
Power comes
up ?
1
Yes
(VSCN
or
VAD
orJScan
Control
Pulse
NG)
No
^Yes
|
SC
Board]
P
Board
SU
Board
Power
SW
ON.
-Output
at
TPVSCN
on
SC
and
"Output
at
TPVAD
on
SC
OK
before
Shutdown
?
(*2)
Yes (SD NG)
Yes
|
SC
Board]
(Scan
Control
Pulse
NG)
SD
Board
Disconnect
SC20.
<( Then Power comes
up
).
>
Output
at
D20's
1
,4,6
pin
OK
?
(*3)
No
D
Board
(*1)
Be
careful that
disconnected
SU
or
SD
board
doesn't
touch
SC
board.
(*2)Check
Test
Point.
:
Output
TPVSCN
:
about
30-40V
TPVAD
:
about
A90V
(*3)Check
Pin
No.
:
Output
1
:5V(DC)
4,
6
:5V(PULSE)—
need
oscilloscope
Power
Supply and
Protection
Circuit
e.g.
42PV500E.B
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