Table of Contents
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No sound but have picture
Check if there is
sound input signal
Yes
Check if there is sound from the earphone
Check if Pin1 Pin2 of UD4(12V) is normal
Yes
Check if there is output at Pin1 、 Pin2 of J17
Check the
speakers
Still having problems
Check the input source
No
Yes
Change Mainboard
- 2 -
Check the audio input circuit
No
between UD4 and U48
No
Check the Mute circuit between
UD4 and U48
No
Check the circuit between
UD4 and J17
Service Manual
Model No.:
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Table of Contents
