Television - No sound on some channels

[monroe2020]

Zenith 27"
Model SJ2765S
11 Yrs old
System 3
MTS SEq Audio System


Television just experiencing sound problems. Audio problems vary from
channel to channel and include: sound from the adjacent channels, no
sound at all, buzzing, low volume, no problem at all. Some of the
channels receive sound fine one day and then have a problem the next
day.

Connected to cable. No VCR. Other TVs work fine when connected.

Any ideas as to what the problem is or what part may be
malfunctioning?

Thanks.

 

[Jacques St-Pierre]

Look if the channel that are not working are stereo. If so, the problem may
be cause by the infernal Sony sound module. That module is use in most if
not all stereo TV sound decoder. When the channel is stereo, it must be
decode by that module and when is fail, you will have the effect you
describe. When channel are mono, the audio signal don't go by that module
and the TV sound will work normally. Replace the module and you will be back
in business. The module is easy to locate, it's a small PCB (1" x 2" aprox)
with SMT parts and condensators on it, it is clearly mark SONY on it. We did
replace many of those Sony sonnd module, all TV brand use that same module,
not only Sony.

Bye
Jacques


"monroe2020" <monroe2020@hotmail.com> wrote in message
news:29f4160f.0310061623.496ffc79@posting.google.com...

Zenith 27"
Model SJ2765S
11 Yrs old
System 3
MTS SEq Audio System


Television just experiencing sound problems. Audio problems vary from
channel to channel and include: sound from the adjacent channels, no
sound at all, buzzing, low volume, no problem at all. Some of the
channels receive sound fine one day and then have a problem the next
day.

Connected to cable. No VCR. Other TVs work fine when connected.

Any ideas as to what the problem is or what part may be
malfunctioning?

Thanks.

 

[David]

Get into the audio user menu and set it back to stereo.
It is probably set to SAP at present.
That was one of the first tv sets to include the SAP audio program
selection.

Beyond that the set needs properly troublshot and repaired by someone with
the experience and more importantly the test equipment needed to diagnose
the failure like that.

David

monroe2020 <monroe2020@hotmail.com> wrote in message
news:29f4160f.0310061623.496ffc79@posting.google.com...

Zenith 27"
Model SJ2765S
11 Yrs old
System 3
MTS SEq Audio System


Television just experiencing sound problems. Audio problems vary from
channel to channel and include: sound from the adjacent channels, no
sound at all, buzzing, low volume, no problem at all. Some of the
channels receive sound fine one day and then have a problem the next
day.

Connected to cable. No VCR. Other TVs work fine when connected.

Any ideas as to what the problem is or what part may be
malfunctioning?

Thanks.

 

[monroe2020]

Thanks David and Jacques

Before reading your responses, on a hunch I reset some of the audio
settings (Mono, stereo, enhanced audio, etc) and that resolved the
issue. No stereo but that never was significant anyway.

Looks like both of you were on the right track with your diagnosis.
Now I have additional information should things become problematic
again. And maybe others out there will benefit from your experience
and suggestion.

Thanks again!