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HI, MY REAR PROJECTION SAMSUNG TV SP53J5HF MODEL BOUGHT IN 2004 APROXIMATELY HAS RECENTLY DEVELOPED BLUE LINES ACROSS THE SCREEN. DOES THIS MEAN THE PICTURE TUBE HAS A FAULT AND IF SO CAN I BUY A REPLACEMENT TUBE? CINDY

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You'll need to do a "Convergence" procedure on your television, which re-trains the
three color guns to focus on a single point, correcting the double-image problem.

This link points to a how-to video & also how-to instructions:
http://www.fixya.com/support/t7212007-colors_separated_double_vision

The procedure is actually in the instruction manual for your TV, and at least one mfr recommends that
this procedure be performed on the TV once each month.
Cost to you: $zero

Posted on Mar 28, 2011

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It means the optical block is going bad. Contact Sony support. They will sometimes warranty these even after the 1yr warrany has expired. Have your model and serial numbers handy.

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Had this problem bout 2,3 years ago...it was fixed in about 5 minutes with the help of this article

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http://www.somelifeblog.com/2007/08/sony-tv-led-blinking-codes-what-does-it.html
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I still have the blue-flash-then-shutting-off problem.. (8 blinks meaning voltage error) but I did fix the blue lines.. The lines across the screen can be very easily fixed whether they're blue green or red. . No, I mean REALLY easy. Took me longer to get the cover off. Once the front cover is off it takes 10 seconds. This link was also posted recently in one of the posts below as a solution..
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After some research I believe the flash/shutting off problem means the CRT is going. I've also read that it might be the D-board and I'm not even sure that that is... But If it is indeed the CRT then I'll let you know it's very difficult to find a replacement blue CRT as this part has been discontinued.. but I did eventually find an alternate to an alternate part (yes that's the 3rd alternate !)) online for $256. Here: http://store.tv-repair-service-salinas.com/8-733-649-35.html

If you're bold enough to attempt that then good luck and please let us know if it worked.
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