Question about JVC AV-48WP30 48" Rear Projection Television

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To many colors in tv double pictures red blue yellow

There is a clear picture with a nother blue yellow red picture beside it

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You have a convergence problem. It is a very common problem with projection TVs. It will have to be serviced by a technician.


C-Dog

Posted on Feb 10, 2008

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My tv screen when on turns yellow then after a while it will switch back to normal colors what can be wrong with it....


Televisions covered: all Projection with yellow picture, but not Projection TVs with a yellowish tint surrounding objects in a nearly normal picture.

Yellow = red + green
normal picture = red + blue + green (RGB). See illustration.

12_27_2011_5_00_56_am.png

Fig. 1 Additive color mixing in an RGB monitor, or RGB Projection TV.

The circuitry powering your blue output, or the blue light engine itself is starting to fail.

Operating Theory:

The lamp module shines a bright light into the optical unit; there are a series of lens and baffles, and at the top of the light engine, a lens puts the picture into a mirror which is reflected onto the screen; All video and color is processed thru the light engine. Blue most commonly fails first, leaving a yellow picture.

Dec 26, 2011 | Mitsubishi WS-55805 55" Rear Projection...

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Picture seems to be offline( curved down) also everything seems doubled and you can see the red, yellow and blue colors of the lenses on the screen


Tv have a problems known as a convergence problems it is dead.Tv have colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?Yes,than the board that call the convergence board it is dead.This convergence board require service must be replacing parts 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board,to solved the tv picture convergence problems mis alignment.The tvs shops,will cost u like around $300-350 for parts and labors.

May 28, 2011 | Samsung HCM4215W 42" Rear Projection...

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I have a Samsung rear projection tv, the picture is faded and the colors are not crisp or clean cannot watch it like this what do you think the problem is?


If this is a CRT-type rear-projection TV, the CRT coolant fluid is probably broken down. It's supposed to be clear, but after a long period of TV operation, it turns a yellow-brown color. If you unplug the TV and remove the back, you can look into the tops of the three picture tubes. They should be a clear red, green or blue color, with no yellow-brown tint.

CRT coolant can be changed, but you need to be very good at mechanical work to do it. Besides the safety considerations (picture tubes and other parts may carry a high voltage charge even when the set is unplugged), spilling broken-down coolant on electronics is usually disastrous, so you have to be very careful.

LCD panels used in projector applications may lose contrast if they are overheated (this can be caused by failure to keep the vents clean as recommended in the owner's manual).

You would have to provide your set's model number to get more specific information.

Oct 27, 2010 | Samsung Televison & Video

1 Answer

How do I change my W2613 TV resolution to 1080i? I just bought this TV a few weeks ago and I want to be able to play my XBox360 in HD and when I connect all 6 wires (Red, White, Yellow & Green, Red,...


use just the red green and blue wires for the picture and NOT the yellow wire. That is why it is messed up.

XBOX games only play in 720, but it will still look great.

Aug 09, 2010 | Televison & Video

1 Answer

The picture is showing a double image and is distored.


The problem you are refering to is more than likely a convergence problem. The convergence circuit in your tv is controlled by an IC (integrated circuit) stk392-110 and it makes the 3 colors (red, blue, green) line up/converge together to create a clear picture. You'll know when this part needs to be replaced because the picture you see is 3d looking and possibly bowed on the top or bottom or on the sides in any or all 3 colors.

Jan 24, 2010 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Distorted Color and geometry of Picture


replace stk 392-110 ( or stk 392-150 same number) , check resistor 2.2 ohms for open or burn beside STK IC's

Apr 13, 2009 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Toshiba TP50G50 Theaterview picture is double with red color only


Your alignment is off. Go to the set up menu then convergence. hit right and you will be in the convergence menu. select the color that is not in alignment. The green line does not move. if blue and green are lined up the line will be cyan. if red and green are lined up the line will be yellow. when all three are lined up the color will be light. Best of luck!

Nov 16, 2008 | Toshiba TP50G50 50" Rear Projection...

1 Answer

Yellow haze


The blue filter is burnt out. A very common problem in Zenith DLPs. There are 3 color filters, 1 blue (a pinkish color), 1 green (a grayish brown) and 1 red (it is red) they give you your colors for you picture. This is a simple fix.

Mar 23, 2008 | Zenith E44W46LCD 44" Rear Projection...

2 Answers

Picture is yellow and green


Your missing the red drive on the set. Its most likly the picture tube. Its a possibility that the red drive circuit could be not working so the best thing to do is take off the gree picture tube socket and put the green board on the red tube. Of course do all this when the set is unplugged. if you have no tv experience. its not a good idea to be messing around inside of these sets.

Sep 02, 2006 | Hitachi 53UDX10B 53" Rear Projection...

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