Question about Zenith A56M91W 56" Rear Projection Television

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No Picture good sound

I have a Zenith 56 and it has not picture but good sound and I listen to see it the high voltage transfomer turns and it does not all does anyone what it could be thanks

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I had the same problem and re-soldered the DAG and the AA wire on the circuit board and now it works fine.

Posted on Jan 01, 2011

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Plug tv in and i get a large snapping sound from the back end


Hi:
This is usually an indiction of a cracked flyback transformer or splitter block, the spitter block is responsible for dividing the high voltage between the three CRT's or picture tubes. This could also be caused by a open tracing in the Horizontal scan circuit, Sometime bad horizontal caps go bad and cause this error also, there could also be a cracked picture tube at its neck, the best way is to take off the back and make the room dark as possible and stand a short distance away and have someone turn on the unit, you will see the arc of blue high voltage from the defective part.

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I posted this many times.
the sound is basicly one circuit. the picture is thousands.
I always suspect a short in the high voltage system of the set first if sound is working.

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Your HV circuit is defective. Most likely horizontal output transistor is shorted and you may need to replace the flyback. You need to call an expert.

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