Question about Sony KP-46WT500 46" Rear Projection HDTV-Ready Television

3 Answers

Green lines appear on the screen when dark picture is shown. Others have the same problem but can not figure out how to remove the front cover. Please help us

Posted by on

Ad

3 Answers

  • Level 1:

    An expert who has achieved level 1.

    Governor:

    An expert whose answer got voted for 20 times.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 12 Answers

The lines are a result of the screen voltage being out of adjustment. As stated, you need to remove the lower front panel (remove the caps in the lower corners under the speaker grills, and use a phillips screwdriver. Pull the lower edge of the cover away from the base and slide the speaker grille downward and away from the chasis.) There is a black cover with four screws that needs to be removed. Behind the cover at the base is the screen voltage and screen focus block. You will be adjusting the POT(s) on the TOP.

***DO NOT MOVE/ADJUST THE POTS ON THE BOTTOM!***

The POTS are in the order of R G B (red on the left, green in the middle, blue on the right) as you face them.
1. Receive monoscope signal (if avail)
2. Set BRIGHTNESS to 50% and PICTURE to minimum.
3. Turn the red VR on the focus block all the way to the left and then gradually turn it to the right until the retrace line is barely visible. Repeat for green and blue VRs. (variable resistors)
4. Gradually turn the control to the left until the retrace line disappears.

Posted on Jan 10, 2008

Ad
  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Ok I have the same problem witht the green lines , but what is the removal of the front panel going to do? and what form of repair is apparent?? Thanks Taris

Posted on Jan 07, 2008

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 211 Answers

The front panel normally has some screws that need to be removed from the inside of the set. You need to remove the back cover first and you should see the screws. Then the panel pops off. Good Luck
Ed
NC Electronics
Mills, Wyoming

Posted on Jan 06, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

LINES AT THE TOP AND BOTTOM OF PHILLIPS MODEL NO. 60PP9202/17F


no lamp for this model, it uses three picture tubes but the three D looking picture is a convergence circuit problem and is fixable.



4_5_2012_11_33_35_am.jpg

Apr 04, 2012 | Philips 60PP9202 60" 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
Rank:guru_s.gif Guru sony.gifSony Expert
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.
Did you think this was helpful? Yes No
new MessageRate('spn1737581','spn1737581cnt','spn1737581stats','spnRateWord1737581','div1737581_yes','div1737581_no','imgStar1737581','ancChangeRating1737581','divChange1737581',1737581,0,0,0,false); Solution #2 posted on Jul 04, 2008 Asker's Rating 0%20stars_w.png
noavatar_s.gif gator149
Rank:nonexpert_s.gif Apprentice sony.gifSony Expert
Rating: 0%, 0 votes
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...

1 Answer

Lines on the screen


Are they thin, white lines running east to west? If so, they are called retrace lines and indicate that the screen settings for the picture tubes is set too high or there may be a mal-function of the CRT driver circuitry. Try adjusting the screen controls which are located behind the front grill of the TV behind an access panel. Once you remove the grill and access panel, you'll see a small control assembly the has two sets of controls. Three for adjusting the red, green, and blue focus, the other, the red, blue, and green screen controls. To adjust correctly, put the TV on an unused input(dark, blank picture) and adjust until there are no visable retrace lines or color in the image.

michtech

Feb 14, 2009 | Panasonic PT-51HX41 51" Rear Projection...

2 Answers

Red and green curved lines when the screen is dark


Your convergence board is going out. this will have to be replaced. i would take a look at the main logic board as well. it could have minor point breakage.

Feb 09, 2009 | Sony KP-57HW40 57" Rear Projection...

2 Answers

Curved blue lines on screen.


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.

Apr 11, 2008 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

White arched lines appearing on dark/black screens.


it sounds like you are seeing the vertical retrace for all three colors together (white). Its possible that all three screen adjustments (red, green, blue) are off, but I suspect a problem with the screen power supply.
there is also a recall on this set
http://esupport.sony.com/perl/news-item.pl?mdl=KP51HW40&news_id=24

Jan 23, 2008 | Sony KP-65WV700 65" Rear Projection HDTV

1 Answer

Green cicular lines appear


Bad green CRT = try turning down green screen control
behind front access panel...................T.

Nov 09, 2007 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Side shadows on picture


it sounds as if there are speakers to close to the tv or the built in speakers are not magnetically sheilded properly (maufacturer defect) if u have or have ever had speakers on the left and right side of your tv then the magnets in them will discolor and distort the screen. sometimes even long after the speakers have been moved away from the tv it will still look that way. you may try going to the library( or online )and looking in tv repair books on how to build a homade degauser unless your tv has that feature built into it in the menu somewhere like some computer monitors do. I had placed the front speaker of a 5.1 surround sound system on top my tv and it cuased that same problem, but i found out that by placing a small round magnet with a hole in the center on top of the tv (after removing the speaker for good) right where the discoloration was.. had to flip it one side or the other to get proper effect...it immediatly took away most of the discoloration and over time it disappeared. I hope this helps. Please email me at agclay777@comcast.net as to your conclusion in case it will help others. thanks, Adam

Oct 10, 2007 | Philips 51PW9303 51" Rear Projection...

1 Answer

Picture is dark


Your set may need to have a screen control adjustment. This adjustment is on the high voltage transformer and the back cover will have to be removed a access it. I'm assuming that your set has a picture tube in it- not a plasma or LCD display. If this is the case you can remove the back cover and adjust this control while observing the picture being shown. If you adjust it too high you'll get retrace lines (fine lines going accross the screen). If you're not comfortable doing this or inexperienced, you might want to get a technician to adjust it for you. There are dangerous voltages inside! Stargazer

Apr 15, 2007 | Zenith H36F46DT 36" TV

1 Answer

Green horizontal lines across screen


try adjusting the green screen control. remove the front bottom panel of the tv by removing any screws holding it in place. gently pull of the front panel, there are gromets holding it in place, you will be able to gently remove the front, just make sure you get all those screws. now reove the small wodden or plastioc panel. now you will see the screen/focus assy. check to see of the screen controls are the top 3 or bottom 3. adjusted the center screen it's the green one, the other 2 are the red & blue. it is best to adjust in a dark room where the lines will show up easier. good luck

Dec 19, 2006 | Hitachi 43FDX01B TV

Not finding what you are looking for?
Sony KP-46WT500 46" Rear Projection HDTV-Ready Television Logo

102 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Televison & Video Experts

The Knight
The Knight

Level 3 Expert

75846 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Jerry Greenberg
Jerry Greenberg

Level 3 Expert

1689 Answers

Are you a Sony Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...