Question about Sony BRAVIA KDL-40V2500 40 in. LCD HDTV

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Looking for a schematic diagram

I want to convert the external headphone jack to drive external loudspeakers.
I also need to know which screws to remove to get the back of the cabinet off to access the internal speakers and the jack.

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It would be less trouble to disable the internal speakers from the television's setup menu and connect to a set of powered speakers or a receiver using the built-in audio outputs. It will be a challenge to get good sound quality and levels from the headphone jack.

Posted on Apr 26, 2008

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First check that any muting control is not activated. This might be a button on the remote or set itself. If you have a headphone jack, it may have dirty contacts as plugging in a headphone usually mutes the speaker.
If the set is mono or only one channel of a stereo set is out, then check for bad connections to the loudspeaker. Test the loudspeaker by disconnecting one of the wires (with the power off!) and measuring its resistance with an ohmmeter (it should be less than 100 ohms - probably less than 8 ohms). Or momentarily touch a 1.5 volt battery to the speaker terminals - you should get a click or pop from the speaker.
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