Panasonic PT52LCX66 - MULTI MEDIA DISPLAY Service Manual page 30

PT-52LCX66 / PT-56LCX66 / PT-61LCX66 / PT-52LCX16 / PT-56LCX16
No sound from built-in both L-CH and
R-CH Speakers
Check that there is an audio signal to the Audio Out
Terminal from all input terminals.
Replace the TV Unit (Base P.C.B. or Power P.C.B.).
No sound from built-in L-CH Speaker only
Press MENU key on the remote and select
"Audio" in MENU screen. Then press "OK."
Does the "BALANCE" screen becomes center position?
Set to the center position.
Swap the Speaker Connectors
to confirm the Speaker failure.
Replace the TV Unit (Base P.C.B.).
No sound from built-in R-CH Speaker only
Press MENU key on the remote and select
"Audio" in MENU screen. Then press "OK."
Does the "BALANCE" screen becomes center position?
Set to the center position.
Swap the Speaker Connectors
to confirm the Speaker failure.
Replace the TV Unit (Base P.C.B.).
(All input are NG.)
(Only Audio1 OR 2
input is NG.)
(Only Audio3 input is NG.)
(Only Tuner input is NG.)
(Only HDMI input is NG.)
OK
NO
Still NG
YES
NO
NO
Still NG
YES
NO
Replace the TV Unit (Base P.C.B.).
Replace the TV Unit (Base P.C.B.).
Replace the TV Unit (Base P.C.B. or
Front Jack/Operation P.C.B.).
Replace the TV Unit (Base P.C.B.) or
Digital Tuner P.C.B.
Replace the TV Unit (Base P.C.B. or
Main P.C.B.).
Replace the L-CH Speaker.
Replace the R-CH Speaker.
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