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Screen all blue

Switched it on and got an all blue screen one day (red and green are there but flash)
popped the back cover off and you can see the red and the green tubes flashing really fast, but the blue just sits there bright with no flashing.
i can cure it temporarily by swapping 2 colours on the back of the focus block.
There is no noise and the tv still takes the same time to come on as normal.

Any ideas whats causing this???

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  • FunkedUp Mar 31, 2008

    ok thanks for the suggestion I will check. Any idea on rough cost to fix if this is the problem?

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  • 8,617 Answers

Try looking into the blue CRT lens while its on and see if the coolant has congealed. You will be able to tell if it has bacteria growing as this can cause the blue to be unresposive and make your screen have a blue haze. The coolant will need changing if this is congealed with bacteria. This is a common problem in all projection tvs blue and green are more prone to this sympton red is not.

Posted on Mar 30, 2008

  • Sonny Berry
    Sonny Berry Apr 01, 2008

    a repair shop will charge about 300 to 400 to do it. However you can do it yourself in about an hour per tube. Its very easy and I am compiling a file with instructions on how to do the coolant change that will be available at my other site in a day or two.

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6ya6ya
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Posted on Jan 02, 2017

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I have a hitachi rptv model #43FWX20B and the picture has a red tint to it. Opened back up and red green and blue bulbs light up. red bulb stays bright while blue and green go dim to bright as tv plays....


Howdy;
Since you don't have any white lines with the red screen/picture I would say that the red bulb (CRT) is conducting too much. There is an adjustment control for that. The 'sceen' control is behind the speaker cover and service cover. Turn red screen control slightly to the left until you get a good black and white picture.

Good Luck, Big Irish.

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1 Answer

Color lines out of focus


Best Solution posted on Apr 12, 2008 Asker's Rating 3%20stars_w.png
dc2eb76.jpg MikeNJ1964
Rank:guru_s.gif Guru sony.gifSony Expert
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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noavatar_s.gif gator149
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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!!!

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1 Answer

Covergence out of alignment on 1/4 Vertical left side of screen


You need to manually adjust the alignment:
On remote, press Menu to get to the main menu
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Then Arrow down to "CONVERGENCE" and press "enter"
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You have control over the Red and Blue
If Green is very out of whack, you'll need a repairman…
While the "target" is flashing, you can move it around the screen with the arrows
Place it over an intersection to adjust, then press "enter"
Now the "target" is steady (not flashing), and you can use the arrows move your color
When it's aligned, press "enter" again
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You cannot adjust every intersection.
Some areas need to be adjusted via the adjacent intersection
When you're happy with color you're working on,
Press "video" while target is flashing to change to the other color
Repeat the above (blue is much harder to see and adjust for me…)
When you're happy with the entire grid, start hitting "Menu"
Each press brings you back out one menu level, until you are out of them
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1 Answer

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http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/


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1 Answer

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Ed
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