Question about Sony Grand WEGA KF50XBR800 50" Rear Projection HDTV-Ready Television

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Blue green bvand

The tv has a blue/green band at the top 2+ inches on the left and 1" tapered to the right

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Re: blue green bvand

Have you tried convergance adjusting?
do you have anything on top of the tv like speaker ?

Posted on Dec 11, 2007

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A horizontal band of green and red lines across the screen

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
Line, faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent.
Type in the brand name to your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

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I bet you have a open resistor for the blue sub yoke. Typically it would be a 2.2 omh or a 1.5 ohm. Some times it is hard to tell buy looking at them. It you have a Ohm Meter, unplug the set, pull the sub yoke plugs from there connectors.(They are the plugs right behind the heat-sinks) . If you know the resister color code it will be a must to determin if any are open or increased in value. If you see a resister that has two red bands and two gold bands, it it a 2.2 ohm. A resister with a brown band, green band, and two gold bands is a 1.5 ohm. On some occasions, you will see a brown band, a white band and two gold bands, this is a 1.8 ohm. This circuit does not give much leeway for subing with wrong values and it even could cause premature failure if the IC's again. One last thing, double check that all the pins made it through the board when mounting and are not touching each other top side of board. As far as the one side of the picture pulling in , I think it is all related. I have seen defective STK392-150's new out of the bag.
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