Panasonic TH-37PX60U - SD Card Handling Precautions; Card Warning Messages and Handling Tips

No Sound (TH-42PX600U)
No Audio
<How to determine the defective board>
<Models>
50inch (HD Panel), 42/37inch (HD/SD Panel)
<Symptom>
Is there a sound
waveform at pin 13
and 14 of IC2307
located on the PA
board?
No
Reseat the
connectors
H1/DG1 and
PA20/DG20.
Yes
Is there a
waveform at pin
1 of connector
PA1 (R-Ch) or
PA2 (L-CH)
Yes
Are the
connectors
H1/DG1 and
PA20/DG20
properly
seated?
Check the speakers.
Is sound
restored?
Yes
Problem solved
No
Replace the H board.
Change the PA board
No
Replace
the PA
board.
No
Is pin 16 of
IC2300 of
the PA board
high?
No
Yes
Change the DG board.
Is the base
of Q2313 of
the PA board
high?
No
Yes
Warning: Disconnect AC Power prior to
making any disconnection or
connection.
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