PANASONIC REAR PROJECTION TELEVISION PT-43LC14 _ PT-50LC14 _ PT-60LC14 _ ABNORMAL PICTURE _ ABNORMAL SOUND _ ABNORMAL COLOR _ BLOCK LEVEL TROUBLESHOOTING TABLE
ABNORMAL PICTURE [ No color; Black/White picture; Abnormal color; No Synchronization; Dark Picture]
No picture or abnormal picture
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Check that there is
no picture or abnormal picture on the screen from all input terminals
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(All input are NG.)
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Does the OSD appear
on the screen?
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No
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Replace the
Projection Unit. Still NG, replace the Main C.B.A.
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Yes
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Replace the Main
C.B.A.
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(Only Video1 OR 2
input is NG.)
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Replace the Rear
Jack C.B.A.
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(Only Video3 input
is NG.)
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Replace the Front
Jack C.B.A. Still NG, replace Rear Jack C.B.A.
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(Only tuner input is
NG.)
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Replace the Tuner
C.B.A. Still NG, replace the Rear Jack C.B.A.
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(Only RGB 1 input is
NG.)
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Replace the Main
C.B.A.
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(Only RGB 2 input is
NG.)
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Replace the Front
Jack C.B.A. Still NG,replace the Main
C.B.A.
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(Only Component 1,
2, 3 OR 4 input is NG.)
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Replace the Rear
Jack C.B.A.
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(Component 1, 2, 3
AND 4 input is NG.)
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Replace the Main
C.B.A. Still NG, replace the Rear Jack C.B.A.
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(Only HDMI input is
NG.)
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Replace the Main
C.B.A.
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(Tuner, Component
AND Video input is NG.)
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Replace the Rear
Jack C.B.A.
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||
(PC/SD Card input is
NG.)
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Replace the Main
C.B.A.
In the case that one
or some input is NG, it can be judged that the Projection Unit is OK.
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{ NG à
Not Good}
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NO AUDIO OUTPUT FROM BOTH SPEAKERS
No sound from built-in both L-CH and R-CH Speakers
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Check that there is
an audio signal to the Audio Out Terminal from all input terminals.
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(All input are
NG.) à
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Replace the Rear
Jack C.B.A.
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(Only Audio1, 2, Component
1, 2, 3, OR 4 input
is NG.)
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Replace the Rear
Jack C.B.A.
|
|
(Only Audio3 input
is NG.)
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Replace the Front Jack C.B.A. Still NG, replace the Rear
Jack C.B.A.
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(Only Tuner input is
NG.)
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Replace the Tuner C.B.A. Still NG, replace the Rear
Jack C.B.A.
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(Only RGB 1 input is
NG.)
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Replace the Main
C.B.A.
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(Only RGB 2 input is
NG.)
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Replace the Front Jack C.B.A. Still NG, replace the Main
C.B.A.
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(Only HDMI input is
NG.)
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Replace the Main
C.B.A.
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Replace the Audio
Amp C.B.A. Still NG, Replace the Rear Jack C.B.A. Still NG, Replace the Power
C.B.A.
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No sound from built-in L-CH Speaker only
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Press
"MENU" button on the remote and select "BALANCE" in MENU
screen. Then press "OK."
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Does the
"BALANCE" becomes center position?
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No
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Set to the center
position.
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Yes
|
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Replace the L-CH
Speaker
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No sound from built-in R-CH Speaker only
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Press
"MENU" button on the remote and select "BALANCE" in MENU
screen. Then press "OK."
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Does the
"BALANCE" becomes center position?
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No
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Set to the center
position.
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Yes
|
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Replace the R-CH
Speaker.
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