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

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Colour images do not line up together

All three images seem to be in focus but the meeting point of the three seems to be infront of the screen or behind the screen by several centimeters.

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Contact Auth Sony Servicecenter...possible bad Optical Block Assy. Part # A-1606-008-A at cost = 750.00 + 600.00 core....T.

Posted on Dec 26, 2007

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Posted on Jan 02, 2017

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I keep getting different colours on my screen red, yellow, pink and blue i pressed the self focus button so many times it does'nt seem to help it clears it while the self focus button is on and then it...


This is Because of the wire is not connected properly chaeck the wires >> unplug and replug them if there are any screws please tighten them

or replace the cord

Aug 15, 2008 | Televison & Video

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White Raster with thin lines; Sound Ok.


White raster with retrace lines: No picture, Sound OK
(picture tube based telivisions.)

It is a common fault to occur in most of the CRT based telvisions, regardless of which brand it is. There will be sound OK, and a bright screen with thin white horizontal lines across; at about an inch space, all over the screen area. This fault may occur along with colur shades also, like blue screen with white retrace line, red screen with white retrace lines, green screen with white retrace lines. Let us take the first case. A white raster with white thin retrace line acorss the screen. These are call vertcial retrace lines technically. To make it mor understand, we have to go to some picture tube electrode details. There are three colour cathodes for a colour picture tube, Red, Blue and Green. Two girds are there called Focus and Screen. Focus grid is supplied with focus voltage which in turn determine the cocus of picture, and screen grid is supplied with screen volrage which determine the emission of the picture tube; in short. There is a final anode to all the picture tubes, which supplied with Extra High Tension voltage, can be located at the top side of the picture tube, to which the EHT voltage from LOT is connected with the help of rubber ****** and clip. Without these three voltages, EHT, Screen and Fcous, no raster will be produced. Therefore in our case, there is a raster, so, horizontal output section including Line Output Transformer [LOT] is functioning well, and as far as sound is there, tuner and video IF section are working well. In fact, all other section except, video output section is working properly.
There are three cathode points on the base card, marked as Bk, Rk and Gk. Check the voltages of these three cathodes. In our case, it will be very low or approximately equal to zero. When cathode voltages goes low, emission of the CRT increases, is the reason. There must be a voltage between 120 and 135VDC at these points. Find out the reason for this voltage drop is the next step. The video drive voltages in most TVs comes from LOT windings, after rectification and filtering. There will be one reisitor of low value, say one Ohms or so, will be connected series with this winding, in between diode and winding. Check the voltage at the cathode of this rectifier diode first. If found low replace the diode and the smoothin capcitor. The smoothing capacitor will be between 33 and 47MFD 250VDC rating. Replace both of them. If there is volatge, say 200VDC or so, check whether this voltage comes to the CRT base board or not, If not, check the conducting wire, serial resistors; if used for open. There is no chance of transistor shortage at this time as the raster we see is white. If raser we see have a specific colour predominent, that is green, blue or red, check the revalent video out transistors and replace it. It is best to replace all the three video output transisors at the same time with same batch and number.

on Apr 18, 2011 | Televison & Video

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I'm getting a double image of everything on the screen in a hazy blue colour. I tried configuring the colour within the menu but the cross simply won't line up. touch focus seems to work with the...


Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from www.TvRepairKits.com and do the repair yourself. Its a fairly easy DIY fix.

Aug 11, 2011 | Toshiba 57H81 57" Rear Projection...

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Horizontal hold does not seem to work. horizontal lines in pic


hi,
Is there is white horizontal thine line on all over the screen then the screen voltage of you TV is high. Can be caused by bad base socket in the picture tube neck, faulty focus/screen block. Check the two things. You can see the base socket at the picture tube neck replace all the three base sockets for the three CRTs. if problem remains then you have to replace the focus/screen block. focus/screen block is one through which you can adjust the screen voltage and focus voltage. If the potentiometer in side it have some problem then this problem can occur. Have added the image for two items for your reference.
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Jun 09, 2011 | Mitsubishi WS-55807 TV

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Cannot focus uniformly across the projected screen. This seems to be more than a focus problem in that some areas of the image seem blurry as opposed to out-of-focus. Also, in what may be a related...


try bringing the screen up as close as possible to the projector and still get a focused picture. check keystone here and also for image clarity. if you still have problems, check for dust or moisture etc in the optics. check the lamp for a clean front surface. clean the air filter also. Try a different image source for differences

May 20, 2011 | Eiki LC-XB25 Projector Multimedia...

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Lines on the screen


Hello
If the lines are thin and spreaded allover the screen from top to bottom, and are equally spaced around one inch of so apart, it will be a screen voltage rise problem. You just decrese both brightness, contrast and colour contols of your TV to zero position, and look into, where there is lines are visible on the screen or not. You should notice this in a drak room, so as to see is well, or close all the doors and windows to make the circumstance to a little bit dark.
If you can see these lines still, it is clear evidence of the above said fault. To rectify this fault you should open your TV. Open the back cover of the TV, and you will see a Line Output Transformer. It is otherwse known as LOT. It can be recoganiized easely as it its size. Normally it will look black in colour and a thick wire from it goes the picture tube's final anode, and look like it is stcked to it with the help of a rubber ******. Other two wires from it goes to the picture tube base board. These two wires are, one for focus and the other for screen.
There will be two controls on the lot, which can be varied, and seem to be integrated with LOT. Among, upper one is for focus adjustment, and lower one is for screen adjustment. Both will be marked as "Screen" and "Focus". You just find out the screen control. With the healp of a screw driver it can be adjusted.
Keep the TV on, Brightness, Contrast and colour to minimum, adjust this control to a little [ a very little movement should be done, otherwise the picture will be get blurred], to just eliminate the lines you see on the screen. Focus control and screen controls are interactable, that is adjusting one may effect the other. After eliminating these lines just up the brightness and contrast control to at about their mid position and press the menu button on the TV or remote control to get the menu screen. Look at the letterings, and if it seem to be out of focus only, just adjust the focus contorl to get well focused captions. The adjustments are hot, that is while the TV is operating. Take care. Ok.

Oct 26, 2010 | Mitsubishi CS-40503 TV

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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...

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Picture Image Becomes Blury When Recording


i had the same problem i just gave the camera a good smack and it was all good. lol

Apr 19, 2009 | Sony Handycam DCR-TRV38 Mini DV Digital...

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