Question about Sony Grand WEGA KDP-57XBR2 57" Rear Projection Television

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Thin red line question continued

Thanks for the quick response. I really appreciate it.
I found the focus box and see that the 3 screen knobs are on top, but which color is which is not marked.

what color is on the left, the middle and the right.

Looks like the factory put a big white blob of something over each knob

That would really help for me to work on the adjustment.

Thanks,

mystic 100

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They are marked "R", "G", "B" the "G" is in the middle. they are hard to see because it is imprinted in the molded plastic. also the words "screen" and "focus" are imprinted use a flashlight to see them. on most of these focus blocks the screen controls are the ones closest to the mounting screws. blue is to the right green in the middle and red to the left but not all of these are the same so check them before you turn them. the white blob is a type of glue to keep the posts from being turned and is a good referance point to get back to the same spot if you have gone too far with the adjustment.turn them carefully with a screw driver to brake the glue.then make your adjustment if this does not cure your problem you will need to replace the block have a tach do this ( critical white balance adjustment and picture tube voltages).

Posted on Mar 14, 2008

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2 Answers

My screen has blue and red lines across it. Now the red lines are becoming stronger and the screen flashes red until it turns off. how do i fix this?


This is for if the lines are thin and in the form of an arc across the screen.

You need to turn down the screen voltage for the blue and red CRT. I believe the access is through the front on that model.

1) Remove the front grill
2) There should be access panel you need to remove once you remove the front grill. This is where the screen voltage adjustment is located
3) Look for a small black box with six knobs on it. One row is for "Focus" and one row is for "screen". It will be marked, but probably need a flashlight to see which row it is. There will be a "R", "G" and "B" next to each knob to represent Red, Green Blue respectively.

4) Careful with the access panel removed, you are only inches away from very dangerous voltages.
5) slowly turn the R or B knob counterclockwise until the lines on the screen disappear.
Keep your hands away from everything else and only use one hand near the tv. put the other hand behind your back.

6) Once corrected, replace the panel and put the grill cover back on.

Feb 19, 2011 | Sony KP-57WS500 57" Rear Projection...

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How did I correct blue and red lines curved across a blank screen of my KP-57WV600 SONY Projection TV?


This is for if the lines are thin and arc.

You need to turn down the screen voltage for the blue and red CRT. I don't remember if the focus block is in the front or in the back of the tv on this model. Most projections have them in the front.

You could check the back access panel and look for a black box with six knobs as descibed in step 3 below. This is what you are looking for.

follow the steps below if it is located in the front:

1) Remove the front grill
2) There should be access panel you need to remove once you remove the front grill. This is where the screen voltage adjustment is located
3) Look for a small black box with six knobs on it. One row is for "Focus" and one row is for "screen". It will be marked, but probably need a flashlight to see which row it is. There will be a "R", "G" and "B" next to each knob to represent Red, Green Blue respectively.

4) Careful with the access panel removed, you are only inches away from very dangerous voltages.
5) slowly turn the R or B knob counterclockwise until the lines on the screen disappear.
Keep your hands away from everything else and only use one hand near the tv. put the other hand behind your back.

6) Once corrected, replace the panel and put the grill cover back on.

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1 Answer

I get blue line ine the screen when it balck


This is for if the lines are thin and arc.

You need to turn down the screen voltage for the blue CRT.


follow the steps below:

1) Remove the front grill
2) There should be access panel you need to remove once you remove the front grill. This is where the screen voltage adjustment is located
3) Look for a small black box with six knobs on it. One row is for "Focus" and one row is for "screen". It will be marked, but probably need a flashlight to see which row it is. There will be a "R", "G" and "B" next to each knob to represent Red, Green Blue respectively.

4) Careful with the access panel removed, you are only inches away from very dangerous voltages.
5) slowly turn the R or B knob counterclockwise until the lines on the screen disappear.
Keep your hands away from everything else and only use one hand near the tv. put the other hand behind your back.

6) Once corrected, replace the panel and put the grill cover back on.

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1 Answer

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First check what color of faint lines comes then reduce Screen Volts in TV of that CRT (tube)
Take off lower front cover, speaker grille of TV, there you will see focus control block that has 6 control knobs, upper 3 knobs are focus adjustment of red-green-blue CRTs and lower 3 knobs are screen volt controls for red-green-blue CRTs. Turn screen volt control knob CCW to reduce screen volts of desired CRT.
Put TV on any free AV input so screen will be dark enough to adjust screen volts.
Thanks.

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Yeah, seen that more times than I shoulda in the last 4 years. The red picture tube has a cathode to heater short. That means it's no good. That red picture tube is no longer availible. But all is not lost. There is a company that rebuilds those tubes reasonably. Most reputable tv shops will know this. The ones I've done cost around $450 out the door. One minor hitch is that with all the shipping involved the job usually takes about three weeks. That can be expidited but then the price goes up.

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1 Answer

Horizontal blue lines with a slight blue wash in the screen


Hi,
Its because of Over Voltage of Screen (G2) to Blue CRT.
Take off front lower cover (speaker grill) and unscrew board. There you will need to find Focus Block mounted having 6 control knobs. 3 knobs are for Focus control and 3 are for Screen volts control. Find Blue Screen control knob and turn is Counter Click Wise slightly until bluish shade disappear on screen including few blue horizontal lines.
If you select AV input to adjust that will be fine as you do not need to wait for dark-scene.

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1 Answer

The tv is showing red lines on the screen.


These are retrace lines. The screen on the red tube is turned up too high. Inside the set there are 6 knobs. 3 for focus & 3 for screen. Turn down the red screen until lines are gone. These knobs are usually found by pulling of the front panel.

Apr 06, 2009 | Televison & Video

1 Answer

Sony projector kp53hs10


I recently had this same issue. If you remove the speaker pannel in front of the set, you will see a block with 6 knobs on it, just to the right of the center panel. This is called a focus block. 3 knobs on top which control the voltage going to each tube, and 3 on the bottom are for fine tuning focus for each tube.

If your problem is the same as mine, it is a convergence problem. and due to the fact that the picture is turning off, says that one of the tubes is not getting enough power.

NOTE: BE CAREFUL NOT TO TOUCH ANYTHING ELSE BUT THE FOCUS BLOCK, THERE IS EXTREMELY HIGH VOLTAGE WITHIN THE TELEVISION, AND CAN CAUSE SERIOUS INJURY.

1. Make sure the screen is blank, ex video 2 with nothing on. It's easier to tell.
2. very slowly, one at a time turn up the knob on the left top, should control red, untill you start to see lines come on the screen, then turn back just till they dissappear, and you see a black screen again.
3. continue with the second knob on top, just the same as the first.
4. And continue with the 3rd knob on top right just the same.
5. when you're finished, turn off the set, then back on, let is set for a min or 2, then hit the FLASH FOCUS.

If the problem persists, it most likely is a IC chip.

Best of Luck

Ken

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Try connecting an external monitor to the Dell Inspiron 9300 and see if the vertical line is also present on the monitor. If the monitor display is fine, then your laptop’s LCD display panel is defective. If the monitor also displays the vertical line, then your problem is with either the video card or motherboard located inside your laptop.
Not sure if the Compaq Presario has an external monitor plug, but if it does the above procedure can be applied to that one as well.


Your responses are intended to improve the level of service provided. Please rate your experience.
Thank You.

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1 Answer

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replace the focus block or try to adjust the screen control on the focus block for red only. this will affect the white balance of the set so adjust it carefully. the focus block is located on the front inside the set. remove the speaker cover then the 4 screws on the front plate. the focus block is 3" x 2" black box with 6 adjustment posts three for focus and three for screen. adjust only the affected screen (R).

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