Question about Sony Grand WEGA KDP-65WS550 65" Rear Projection HDTV

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Thin blue lines across the screen.6or 8 of them 3 or 4 inches apart. everything else works great still perfect picture

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You need to turn down the Blue Screen Drive control a notch, Blue tube has built up higher then R/G over Driving.

Posted on Sep 27, 2010

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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1 Answer

Horizontal Band of Thin Red and Blue Lines on Screen


Sound like your Y-Sustain board has one foot in the grave. The Y upper buffer and Y lower buffer boards go when the Y Sus Goes too...

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My toshiba 55pd8800ta now has horizontal lines of picture across the whole screen. The picture and menu are out of sinc. Help!


These lines are called vertical retrace lines. Thin white lines are seen across all over the screen, at about an inch apart. If you wish to get more details, check this site. Pull up older posts there. Check the site with patience, as it has over 2200 posts now. All are related to electronic equipment repair help. One among the posts has details about this fault.

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HD61W66YX60


this is a convergence issue. it is caused by one of three things
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My Hitachi 65SWX20B Model, made in 02, just developed Picture disturbance


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Thank you,
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Television has no picture


That TV uses the PTK195 chassis, and the fact that you see only a thin line for each color near the bottom of the screen tells me your vertical output IC has stopped working, and is putting a small DC voltage across the yokes. I have seen this caused by a defective vertical output IC and I have also seen vertical problems caused by a small CRT coolant leak which drips onto the main board near the vertical output IC. If you do not have experience servicing the PTK195 chassis than have a qualified tech handle it for you.

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1 Answer

Blue tint and lines on screen.


Those lines sound like "retrace lines" and several things can cause them. The most common are shorts inside the picture tube and shorted semiconductors in the video driver circuits. They can also be seen if the blue screen voltage is too high or if someone has tampered with the screen voltage control.

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