Question about Sony KP-51HW40 51" Rear Projection Television

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Help with lines in screen

You said "Open up the front of the set by removing the speaker screen and the black piece of particle board". How do I do this? I can't figure out how to remove the speaker screen etc. Thanks

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At the bottom of the speaker grill there are two holes filled with a plastic plug. Use a small flat head screw driver on the sides of the plug to slide the plugs out. You'll see the little space next to the plug on either side that you can put the flat head in to slide the plug out. Once you do that there are screws behind those plugs. You'll need a phillips head to take those out. Then just pull out gently at the bottom of the speaker grill and it should come toward you then just slide it down a little and it comes right off. Behind that is the particle board screwed on in the center with several screws. Take that off and you can't miss the adjustment blok.

Posted on Jul 07, 2008

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For this problem, what you have to do is here I found this solution: Right below your speakers on the right and left side are tabs. Pull out the tabs and remove the screw on eachside. Once that is done remove the speaker cover and you will see a fiber board cover in the middle of the tv, there will most likley be twist ties holding some wires, to make it easier to work remove the ties. Now remove the screws on the fiber board and pull it off. You should see 3 adjustments on the top for focus, do not touch those. Below the focus adjustments on the bottom is the blue, red, and green adjustments (they should be labeled). All you have to do is turn adjustment screw slightly to the left(or counter clockwise) and it should clear right up. That should do the trick, Hope this is helpful. Please dont forget your rating.

Jan 26, 2008 | Sony KP-51WS500 51" Rear Projection...

1 Answer

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Open up the front of the set by removing the speaker screen and the black piece of particle board. on the bottom right you will see 4 knobs. Turn those knobs slowly till the arcs go away. The 3 knobs on the bottom are for color. the 3 on top are for the focus.

Jun 30, 2008 | Sony KP-51HW40 51" Rear Projection...

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How to remove the front lower panelKP-65WV600


http://www.somelifeblog.com/2007/09/how-to-self-diagnosis-screen-displays.html says, "The Sony KB-46WT500 has 4 round male plastic connectors that plug into round plastic holes in the particle board behind the front cover. 2 of them are even with the middle of each speaker and about 4 inches away from the inner edge of the speaker toward the middle of the front cover. The other 2 are just below the top edge of the cover about 4 1/2 inches away from the power button - 1 on each side.

Just remove the screws on the ends and then pull enenly (sic. He must mean evenly) on the front cover. You won't break it. i realize this may be too lat to help you, but maybe someone else will be helped."

I hope that helps.

Mar 21, 2008 | Sony KP-65WV600 65" Rear Projection...

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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

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http://esupport.sony.com/perl/news-item.pl?news_id=24

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4 Answers

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According to several sites, the problem is with the convergence via the voltage on the color ray gun tubes that get out of adjustment. They are also known as retrace lines

Sony wanted between $150-$300 to diagnose and fix -- instead I was able to complete this repair in less than 15 minutes!
Since I had been through the routine once more and I was sure others are running into this issue,
1. All you need to complete this guide is one flat-head screwdriver and one Phillips screwdriver as well as a delicate touch.
2. Front shot of the television. Their are two screw holes on the front of the unit near the edge of each side right next to the speaker grille.
2_sony_projection_tv_front_screw_locations.jpg

3. Close up shot of the screw hold. It is covered by a plastic cover that has two tabs holding it in. Carefully pry them out with your flat head screwdriver. Do not apply too much pressure or you can break the tabs off. Once the covers are removed, unscrew the two screws with a Philips screwdriver.
3_sony_projection_tv_repair_screws_1.jpg

4. To remove the cover, pull from the bottom of the front case and rotate towards you. Once you rotate it out, the top will disconnect and come loose. Do not pull it off, as there are cords attached. (see picture) Loosen the cables attached with the twist ties and set the front cover to the left side.
4_sony_projection_tv_cover_off.jpg

5. With the speaker grille and cover removed, you now need to remove the wood panel to expose the inner electronics on your Sony HD TV. To do this, remove the four Philips head screws from the panel. Then, pulling from the right, rotate the panel off and the electronics will be exposed.
5_projection_tv_cover_guns_tubes.jpg

6. This is a picture of the inner electronics of your Sony Rear-Projection High Definition television. The little black box towards the front of the unit is where we will concentrate our time as it is the control for the voltage & convergence adjustment.
6_voltage_projection_red_blue_green.jpg

7. When focused in on the controls, you want to concentrate on the bottom row for the voltage / ray gun projection adjustment. The colors are labeled below and from left to right are blue, green, and red. Choose the one that needs to be adjusted and turn ever so slightly with your Philips screwdriver to remove the lines. In my case, the red just needed to be turned 1/8 of a rotation to be back in adjustment. Do not turn to quickly or abruptly or you could possibly damage your TV by varying the voltage too quickly.
7_red_blue_green_voltage_band_adjustment.jpgI hope this guide worked for you?

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21 Answers

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I had the same problem with my sony KP-57ws500 rear projection tv. To solve this problem all you need is a flat and phillips screwdriver. Right below your speakers on the right and left side are tabs. Pull out the tabs and remove the screw on eachside. Once that is done remove the speaker cover and you will see a fiber board cover in the middle of the tv, there will most likley be twist ties holding some wires, to make it easier to work remove the ties. Now remove the screws on the fiber board and pull it off. You should see 3 adjustments on the top for focus, do not touch those. Below the focus adjustments on the bottom is the blue, red, and green adjustments (they should be labled). All you have to do is turn adjustment screw slightly to the left(or counter clockwise) and it should clear right up. I'm not a technician but i read up on it in a repair manual and it worked perfectly and saved me a $100.00 for a service call. It took about 10 minutes to do. I also have a friend who expiernced the same problem with a different model sony projection tv and it worked for his also. Apparently this is a common adjustment that needs to be made espicially if the tv is moved.

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