Originally Posted by Landsharkk Ok, I have a problem and I need help, please!
I believe I broke something inside my tv and no longer get sound out of the Left Front Speaker.
I have a WD65833 DLP, worked great up until today. I'm using a cheap receiver to pump sound to a 3.1 setup, no problems for over a year, but today the left front speaker stopped putting out sound to my 3.1 system.Using TV speakers only
I still do not get sound out of the left front speaker (the rear speakers with surround sound on works, however), so I'm very positive it's something on the inside of the TV (hoping just a fuse or something).
I've pulled the back off my tv now, but am not entirely sure where the audio hooks up to the board on the inside. Does anyone know of a place I can find a pdf or something of the diagram on the inside, such as fuse locations, connector locations, etc?
Has anyone else had trouble losing a left or right speaker/sound from one of these? I'm trying to avoid calling out a tv repair company. My assumption is something burned out, maybe a fuse, dust crossed some connections, etc. I just don't know where to look exactly.
EDIT: I should probably reiterate, it's the front left audio channel that no longer works...not the speaker itself.
Since you're getting no audio out of both the left TV speaker
and the left audio line output, the problem is highly likely (but
not quite 100% certainly) in the TV. To make sure, unplug
the TV audio output from the receiver input and acertain you
still get no audio from the TV.
If so, there's a multitude of possible faults in the TV. However,
connectors are not likely candidates. To locate the fault, you
need the service manual (specifically, the schematic and PCB
layouts) and a signal tracer (an instrument thal allows you to
check whether an audio signal is present on a line). You then
check for audio starting at the left speaker and working
backwards through the signal path. Somewhere in there the
signal will appear, and that's the area where the fault is
Assuming you have no access to test instruments, you can
try to connect audio from any known good component (say,
CD player) directly to any of the other TV left audio inputs,
select that input and listen for sound from the TV speaker.
Try this on several inputs (say, input 1, input 2, either
component, etc.) and see whether you get any sound from
the left speaker. If you do, the fault is in the path currently
feeding your receiver. If not, the fault is in -- or precedes --
the audio switching circuit This somewhat localizes the fault,
but probably, not enough to identify the bad component.