Question about Sony KP-57WV600 57" Rear Projection HDTV-Ready Television
I have a 6 year old Sony KP-57WV600. The picture still looks great. However recently there are small green lines that span across the entire screen (horizontally) showing up. They are only noticable when changing channels in the delay between channels, a plain black screen comes up and then you can see the green lines. You can only see it for a couple of seconds as you are changing channels. The green lines also show up when watching a DVD and the movie has a lot of black background, etc. I have unplugged and replugged all electrical cords for all components. Also, this doesn't show up when you first turn the TV on. After 30-45 minutes or so, the green lines begin to show up. Any ideas on how to fix the problem?
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.
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.
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.
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.
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 adjustmSONY KP-57WV600 - Small green lines across the scr - 6_voltage_projection_red_blue_green.jpgom/_0xPnZbi2QtQ/Rn7bSYP11tI/AAAAAAAACR0/l8UOz9Z4vGw/s1600-h/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 damaSONY KP-57WV600 - Small green lines across the scr - 7_red_blue_green_voltage_band_adjustment.jpgly.
I hope this guide worked for you?
Posted on Apr 26, 2008
Go to this site, follow the instructions, and it should fix your problems. I did, and my tv is better than ever!
I was having this problem with blue. I was able to fix it, and now my tv works again. For those having trouble removing a different front panel, here is what I found on mine -
I own a KP57WV600. Removing the front panel is a little trickier on this model. You remove the 6-8 screws on each side behind the two speakers. You will access these from the lower rear/sides of the TV. Remove the small 2ft plastic pieces. Now from the front of the machine grab the entire lower piece (speaker covers & power/volume/chanel buttons) from the bottom and pull down and towards yourself. There are 4 slots that this piece fits into. I had to take off the lower back panel to see why it wouldn't come out. Don't pull to far because this lower front piece is connected to wires. I'd say you have about a foot of play. Now you can remove the fiber board panel and access the blue/green/red lower screws. When you adjust these, go a fraction of a milimeter at a time.
Posted on Apr 09, 2008
I agree adjusted the green screen control JUST a little so the green lines are not visible on a black screen. to locate the screen/focus control assy. you must removed the bottom front plastic of the tv.looke of 2 to 4 screws, some may be hidden. then the plastic front will pull of. it will come out with some difficulty, just make sure you have all the scrwes. Then in the center remove the black wodded or plastic panel, usually 4 screws. now in the upper right side you should find a small black square with 6 adjustable controls. using a light look to see if the top three is the screen controls. ( i think it is.) If not it will be the bottom three. The green control will be the one in the middle, the other 2 are the red & blue tubes. good luck.
Posted on Dec 19, 2006
I think tha you nid check the screen controls [green] good luck!
Posted on Dec 19, 2006
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