Question about Mitsubishi WT-42315 42" TV

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Mitsubishi Big screen

It has a blue tinge around all objects like the picture is slightly out of focus

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This problem could be as simple as dirt or dust inside on the lens of the picture tubes or on the mirrors inside the projection tv. It could also be the blue tube is on its way out or the focus on the blue tube needs alighnment . This set has extremly high voltage inside, so its not for the do-it your selfer to mess with!! Now theres nothing wrong with a do-it your selfer but in this case save a life, and call a tech in to see if it just needs cleaning or light alighnment. If you call one, watch how they take apart the screen assy. from the tv and see how they clean the set ,so you can do it next time. Now like I said it could be a picture tube going bad too so please dont be too disapointed when they tell ya that. But depending on how old the set is ?? It might be worth investing in the set?? Also another thing , when the tech comes in they MAY say the set needs to go to the shop to be looked at . This is a way to get more cash out of ya as Ive seen simple cleaning or adjustment repairs turn into 500 to 700 bucks when in reality, it could have been done in the home for a hundred or so. Dont be afraid to pay someone a hundred or two, if they fix a broken set in the home, as believe me you saved a bundle when you let them, cause when it goes out the door (the set) tack on an extra 200 at least. Good luck

Posted on Jun 05, 2006


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Remove purple haze around edges

The set needs to be focussed and reconverged. The red and blue images combined make a magenta/purple image. Adding green makes it white. Depending on the type of TV, if it's a CRT projection TV then there's an electronic focus control for each of the three tubes as well as the mechanical adjustment of the optical lenses. Given the description, then I'd have a look at the electronic focus first. A sudden shift in focus suggests that something in that circuit has given out. This would cause the red and blue images to go soft enough to create a halo around objects on screen.

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Display has red tint across entire screen. Could it be the bulb? If so, is that still available? Approximate cost?

two possible solutions----either a problem on the small circuit board that is connected to the RED picture tube OR the red screen control is turned up too high. These sets have a small square block with RED,Green, Blue screen controls(same place also has red, green, blue Focus controls) if you remove the speaker grill you will find an inspection plate made of masionite---the focus/screen block is visable behind it----get a flashlight and look carefully at the block---one row of 3 plastic shafts is Focus(don't touch those) the other 3 are Screens(you should see R, G, B marked) go to a blank video input(one with nothing attached) and turn the RED SCREEN CONTROL JUST SLIGHTLY TO THE LEFT UNTIL the red goes away.

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Picture is very dark and color not too good.

Take the front speaker grille off; it is stiff but will pull off. Take off the access panel underneath; four or five screws. Inside you will find a screen/focus block control assembly. Get a flashlight. Turn up the screen controls SLIGHTLY. for RED, GREEN AND BLUE. The best way to do this is to turn off the color first and make sure you end up with a good black and white pix ( not tinged green, red or blue) then turn the color back up in the menu.

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Phillips 52 in big screen screen has a red tinge other colors come though but not very bright

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1 Answer

Horizontal blue lines with a slight blue wash in the screen

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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Sony Screen keeps Blinking

If the red LED blinks 5 times you have a AKB error. It is caused by the CRTs trying to balance the color, and failing. Its an annoying problem that happens when the CRTs get old. If its just beginning you can balance or slightly turn up the screen voltage to the CRTs to remove the problem, if its in the end stages, the CRTs may need to be replaced. This is however, very expensive. If you are daring and safe around high voltage, pop off the speaker grille, open the front panel up and find the focus block. Don't poke around! those big red wires have 30,000 volts running through them! The focus block is a black square box with six knobs on it. Three are labeled screen, three labeled focus. You will see each row labeled R, G, B for red green and blue. The writing is tiny. Mark all three screen knobs with a colored marker so you know where they started. Then turn each one up slightly. If you have a picture, put it to a black screen or blank input. Turn each knob up just unit you see the color over drive and turn it back down to black. You want to set it just below retrace to maintain black level but drive the CRT fully. Setting this is hard but may fix an AKB issue.

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I have a 3 year old mitsubishi wd-52526 lcd projector tv that is starting to have some focus/image alignment issues - in general picture is a little out of focus and there are rainbows around things at the...

the differnt guns are out of alignment. Your tv has 3 lcd screens, a red, green and blue one what overlay to form the image. Sometimes they move slightly for what ever reason and that causes the rainbow and out of focus picture. Its something that a trained pro should do but is a cheap fix and won't set you back too much

Oct 20, 2008 | Mitsubishi Televison & Video

1 Answer

Samsung HCN653WX has wavy lines and red and blue ghosting

The most likely cause is shorted convergence chips and possibly a few pico fuses.

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony,Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
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Problem #2
Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

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You can see some more examples and find a fix herebb0cf99.png

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3 Answers

Z3 projector.3 years old. Blue tinge in one corner of projected picture. Grainy picture on dark scenes.

There may be some problem with your picture tube else try this that looks like retrace lines. Anyway, you should try to adjust screen pot not focus pot. Make sure you are turning blue screen pot (there are 3 focus pots and 3 screen pots) and do it slowly. If you turn it too much, it will affect your grayscale

Jun 23, 2008 | Televison & Video

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