Panasonic TH-50PB2E / TH-65PB2E Service Manual / Other ▷ View online
Power Supply SOS
(except 11 blinks)
Check the short circuit between Vsus line and GND
Check the short circuit between P15V line and GND
Check the short circuit between Vda line and GND
5 blinks
7 blinks
2 blinks
Others
（
（
Refer to the “Cause of
SOS detected” part. ）
First you should check all the connectors are seated appropriately.
if the connection is abnormal, re-connect and re-test.
if the connection is abnormal, re-connect and re-test.
if there is SOS blinking except 11 times, check as below.
6 blinks
8 blinks
Checking the Power Supply Abnormality
Then, check each blinking case.
SS module
SC module
P module
No short
Continue to “Checking
P15V (next page)”
P15V (next page)”
shorted on SC2
< Vsus line power supply chart >
Checking the short circuit of Vsus
Remove the cable
connecting SC2 and SS11.
connecting SC2 and SS11.
Check the short circuit
between
between
SC2 1pin and GND
SS111pin and GND
P2
SS111pin and GND
P2
1pin and GND
P11 1pin and GND
P module
shorted on P2
shorted on P11
shorted on SS11
P
SC(SN)
SS
SC2
SS11
P2
P11
Vsus
Vsus
1
1
1
1
Vsus
P
SC
SS
SC2 P2
Vsus
Vsus
1
1
Vsus
SS11
P11
1
1
Vsus
TH-50PB2
TH-65PB2
SC2
SS11
P2
P11
only for 65PB2
SS module
SC module
A module
No short
shorted on SC20
Remove the cables connected
SC20, SS33 and P6.
SC20, SS33 and P6.
P module
shorted on P6
shorted on A16
shorted on SS33
SC20
SS33
P6
A16
Checking the short circuit of P15V
< P15V line power supply chart >
SC
P
A
SS
A16
SS33
P6
SRV P15V
13
P15V
13
A20
29,
30
SC20
1,
2
SRV P15V
SOUND15V
P6
A16
A33
1,
2
19,
20
15
15
Continue to “Checking the
short of Vda (next page)”
short of Vda (next page)”
Check the short circuit
between
between
SC20 SRV P15V and GND
SS33 SRV P15V and GND
P6 15pin and GND
A16 13pin and GND
A16 15pin and GND
SS33 SRV P15V and GND
P6 15pin and GND
A16 13pin and GND
A16 15pin and GND
PANEL
Remove the cable
connected P35
connected P35
P module
Shorted
Checking the short circuit of Vda
< Vda line power supply chart >
P
C1
C3
C2
C26
C36
P35
C28
C18
SRV
Vda
Vda
1,2
1,2
C25/C24
37-40
1-4
1,3
1,3
PANEL
Check the short circuit
between P35 1pin and
GND
between P35 1pin and
GND
Check the short circuit
between SRV Vda on C1
board and GND
between SRV Vda on C1
board and GND
Continue to the explanation
of each blinking times (from
next page)
of each blinking times (from
next page)
No short
No short
C1 Module
P35
Shorted
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