Question about Sony Grand WEGA KF50WE610 50" Rear Projection HDTV-Ready Television

1 Answer

Light green and blue horizontal lines on the screen

The lines seem to fade a little after the set is on for a while but they never go away entirely

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  • Shahid Electronics
    Shahid Electronics May 11, 2010

    Let me know exact model number of TV to check possible cause of problem.



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  • 184 Answers

Its another instance of the optical block (light engine) failure these TVs are known for. Heat from the lamp has damaged the LCD panels in the light engine. Sony has been directed by the attorney general's office in New York to warranty these TVs going back 4 model years. Call Sony at: 1-800-222-SONY for assistance.

michtech

Posted on Feb 16, 2009

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1 Answer

Vizio VO370M LCD TV screen is mostly black with green/blue horizontal stripes at the to. How can I fix this?


Most likely you are looking at a defective LCD panel, but I would recommend getting a proper diagnosis.

Sep 07, 2012 | Vizio VO370M LCD TV

1 Answer

Picture fades in and out to the color blue. sometimes entire picture is blue


id check the blue screen control first
its at the bottom of the set you will have to take the front panel off and behind it is another small black panel remove that one
and to select any function those controls need to be attached so slide that front panel to the left there and take you remote put the tv on video input
and there are sic controls on this little black screen control block
look for the screen controls and turn the blue one just slightly clockwise and you will see the blue screen will light up and you will have little arched lines turn the control back slowly till the lines disaper and the screen goes black

and then cycle the set off give it five mins or so and restart it and see if every thing returns and your video is being displayed then switch it back to your input and view and reassemble

Nov 19, 2009 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Blue d52wlcd


The other stuff is probably the Engine as well. Before going any further, have them replace it again and see if the other problems show up. I am willing to bet they wont. These Engines are mostly refurbished units and if they originally had intermittent problems on the Digital Board that comes mounted on the Engine it would get passed on to you.
I would not wait before having it replaced and I would Call LG first to let them know you got a dud replacement Engine. Let me know how it comes out.
Skyassoc

Aug 29, 2009 | Zenith D52WLCD 52" Rear Projection...

1 Answer

Color lines out of focus


Best Solution posted on Apr 12, 2008 Asker's Rating 3%20stars_w.png
dc2eb76.jpg MikeNJ1964
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Rating: 89%, 674 votes
You have a completely different problem. The screen voltage for the blue picture tube is slightly too high on your set. This will put fine lines in the background of the picture, called retrace lines. This is very common and easy to correct. Remove the front speaker cover and the access panel behind it. Look inside and you will see a black box with six controls, each control having a little white glue on it. This is the Focus/Screen block. Three controls are labeled Focus and three are labeled Screen. The screen control in the center is for green but I am not sure if the screen control on the left or right is for blue for your model. With the TV on, set it to VIDEO 1 but do not connect anything to the VIDEO 1 jacks. This will produce a pure dark picture, showing any faint lines in the background. Choose one of the screen controls and increase (turn clockwise) it slightly. If the blue lines do not get brighter it means you are turning the red screen control, so put it back where it was and choose the other screen control. When you find the blue screen control, decrease (turn counter-clockwise) it until just when the blue lines are gone. If you want you can check that the red and green screen controls are set to just below the point where their faint lines are visible. When done, replace the panels and your picture will be back to perfect.
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MikeNJ1964 was exactly right! I have a Sony KP-65WV600 that had horizontal green lines that showed when the picture was darker. I had to remove 3 screws on the right and left side of the tv holding in the speakers...carefully pop out the middle panel from the clips holding it in....remove 4 screws from the cardboard in the middle and remove the cardboard. I then saw the six screws. The adjustment screws were the three below. I turned the middle screw until the lines dissapeared. I tried the left screw and blue lines appeared which I then adjusted away.
THANKS a bunch. SAVED me money!!!

May 15, 2009 | Sony KP-65WV600 65" Rear Projection...

2 Answers

Screen fades to blue.


The Blue SCREEN setting is too high. These adjustments are located inside the TV behind the front panel. There are two screws behind covers and then a wooden panel to remove to access the adjustments. The leftmost set are for BLUE, the middle are GREEN, and the right are RED. The top row are FOCUS and the bottom are SCREEN. Focus will focus/unfocus the tube and Screen will adjust the power of that tube (there are 3 tubes, one for each color). If Screen is adjusted too high, horizontal lines will appear (my TV had red lines, but I played around with the knobs and saw that it could happen on any of the colors). Additionally, if SCREEN is set even higher than that, the tube could go so high that it turns the whole screen that color (in your case, blue). If this happens the TV will shut down, probably due to either overheating or overvolting. To fix this issue, turn the appropriate SCREEN dial down until the lines go away. In your case, you want to turn the lower left dial down. Don't turn it too far down, if you turn it more than necessary the TV can give you an AKB error (noted by the STANDBY light flashing a sequence of 5 blinks).

Apr 02, 2009 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Red,green and blue lines across screen


I f these lines are slightly diagonal and they all showed up at the same time. you probaly have an open resistor in the ABL circuit. since your set is 13 yrs old, I would not put a penny into it.
You might take the front grill cover off and the panel behind it and find the little black box with 6 little controls 3 are for focus 3 are for screen turn the screen ones ever so slightly counter clock wise. the control in the middle is the green screen adjustment. If the green line goes away try the one labeled r for red and b for blue.

Mar 31, 2009 | Hitachi 50V500 50 in. HD-Ready LCD...

1 Answer

Blue Horizontal arching lines, Blue hue at power on


if you take the front cover off the tv, you will see 6 little nobe, the top 3 are focus, bottom 3 are brightness, should be RED-BLUE-GREEN in order from left to right, find the one that is blue, turn it down a quarter turn, should fix the problem

Dec 31, 2008 | Sony KP-46WT500 46" Rear Projection...

1 Answer

SONY KP-46S25


A "Gray Scale" adjustment may solve you problem. If one of the picture tubes is set too high it will cause these RETRACE lines. Then too a weak picture tube might cause this. If the horizontal lines are one color: red, green,or blue then whichever color that is shown would tell you which tube is set too high. Your set has 3 screen controls that control the brightness of each tube. One may need to be turned down a little. Stargazer

Mar 11, 2007 | Sony KP-46S25 TV

4 Answers

Lamp issues


No its a tube and not a bulb. If thew line is green then theres an issue with the red and blue as the green is stationary on most sets unless thers a green centering ? Its a componet on the convergence board thats bad or going bad but if you replace any components on the board most likly your gonna need to do a convergence alighnment I would let a pro handle this repair unless your an experineced repair tech Good Luck

May 21, 2006 | JVC AV-56WP30 56" Rear Projection...

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