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Reoccurring audio problems
All TVs today are actually computers which also receive TV frequencies. The audio has to be decoded from the digital signal then goes to an analog audio amplifier. When you hear no sound with the picture do you hear anything coming out of the speaker? A hissing sound when the volume is way up?
If you hear a hiss then the amplifier is working but not getting anything to amplify. This could be due to a bad solder connection or a problem with the CPU and/or a switching circuit. Without a schematic I'm guessing here.
The bottom line is, there's probably nothing you can do to fix it unless you're used to dealing with SM (surface mount) technology and can touch up all solder connections from the CPU to the audio amp.
Whoever is fixing the TV should be able to tell you where you're losing the signal from the RF decoder to the amplifier as long as the problem is not before the decoder (which is probably all in software that the CPU runs.)
on Oct 05, 2017
Check its speakers. If found OK, check and replace the audio output card. Visit the site named 'Electro-help' for
more details. Check this link and
select the site named above. View it
in 'Flip card' option, which can
be selected from the drop down box menu by the [Sidebar] tag, at the top left
corner of the display window. It will
make search easy. Some times, the ads
attached with each posts, both at the right and bottom, might help you to find
the availability of spare parts. There
are more than 750 posts to different brand TVs now.
on Sep 14, 2012
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