Question about Sony Grand WEGA KF50WE620 Television

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We have a sony tv that has had a blue line on the bottm of the screen for about 2 weeks now what does this mean?

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  • 84 Answers

Most likely a bad optics block. Part number is A-1086-497-A, but the cost of parts and labor may exceed $900. Sony blocks are very expensive.

Bill W
integrityhomeworx.com

Posted on Mar 23, 2011

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Lcd tv goes blue screen


Blue Screen usually means you have no video source, but also it can be a bad cable, bad signal, or week signal. I will try to hook it up to a dvd and test it on another source. However the screen should be all blue aand not blue lines, if you can email me a photo of the screen I will be able to properly address it.
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My Sony Bravia KDL 40WL 135 TV has been flashing strange colors for awhile; today screen is black with a thin blue line across the bottom. No sound. Any help appreciated.


The vertical output section circuit has the fault. Contact any experienced service technician. This is not a user repairable fault.

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Arched blue lines across screen of Sony 63" Rear Projection TV


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

Tonight I have to do this fix again..the blue lines came back about a week.
http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html
I strongly urge you to save the web page locally on your hard drive or print it out and place with the tv manual....

Good Luck..

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I have a Sony Big Screen Projection TV


unless you work on t.v.s this is nothing you can service.check your warranty &/or call a qualified service tech.hope this helps

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1 Answer

Lines on tv screen


Both sound like bad LCD panels. The following must be answered to confirm this:
Do the lines appear on all inputs/all signal sources?
Can they be seen in the OSD/menu?
If yes to both questions, it is likely that the LCD panel is bad

Jul 19, 2008 | Sony BRAVIA KDL-32S2000 32 in. LCD HDTV

4 Answers

Blue Screen and TV shuts off


Here's a shortcut to what the blinking codes mean.
http://www.somelifeblog.com/2007/08/sony-tv-led-blinking-codes-what-does-it.html
Strange how some people have 5 blinks. Most with this problem have 8 blinks (like myself)

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..
http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html
(My lines didn't look like the ones in the picture mine were several evenly spaced blue arcs)

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.
Or another alternative is there's a whole lot of Boxing Day sales goin' on right now.

Jul 12, 2008 | Sony KP-51WS500 51" Rear Projection...

1 Answer

SONY TRINITRON TV 36"


I think you had an arc in the high voltage circuit which zapped the blue drive circuit to the picture tube. This could have been caused by the high temperatures the your set was subjected to. Stargazer

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