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sony 21 tv

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txter2005

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boosing,i want to get an info.i have repair a sony tv no audio out but have anaudio in pre amp..i try chnge audio ic ba5412 and c144 and capacitor but no audio out.i want some knowledge about this.thnks
 
Changing components at random is no way to fix anything, you need to fault find.

It would also be helpful if you had your location filled in, and mentioned what model the set was.
 
boosing,i want to get an info.i have repair a sony tv no audio out but have anaudio in pre amp..i try chnge audio ic ba5412 and c144 and capacitor but no audio out.i want some knowledge about this.thnks

Nigel is correct, a model # is basic.

But let me get generic:

Did you put an ohm meter across the speaker?

Subsitute with a known good speaker?

Make sure there isn't a broken piece in the head phones jack?

Look at the audio output ic. Is it cracked?

Lots of simple things to check.
 
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