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I have a 2002 43fwx20b the top left of picture is out of focus red and green colors missed up res of picture ok

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Hi,
Symptom shows there are few resistors need to be replaced in convergence out section on main board of TV.
Also check dry solder joints and resolder them.
Let me know if you want to repair TV by yourself to provide you repair manual copy and further technical info about Hitachi 43FWX20B TV.
Thanks.


Posted on Jul 29, 2009

  • Shahid Electronics
    Shahid Electronics Jul 29, 2009

    OK,
    Click HERE to download repair manual copy, please download all 19 parts of file and unzip with WinRaR software to get one PDF file of manual.
    Please check IK04 and IK05 on page-68. These are convergence out ICs and that is suspected board causing problem in picture.
    Please check for resistors that are faded color due to heat. Replace it, service manual has part number list as well.
    Thanks.



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My Model TV # is 51swx20B. Two days ago the picture started having a lot of green in it and no blue. What is the repair needed.


Do adjustments on focus block. Will have to open front panel access door, focus block blue will be on left, green will be on top. Top screen bottom focus. Turn clockwise to increase, counter clockwise to decrease brightness. Turn the color all the way down on menu where it's pure black and white and make adjustments for perfect black and white picture, then when you adjust color, it will be perfect.

Aug 09, 2011 | Hitachi 51SWX20B 51" Rear Projection...

Tip

What to do when you only have Green on a CRT Projection TV.


If you have a picture, but only in green on a 3 crt projection TV, I would try turning up the drive for the red and blue guns. They have probably changed over time and red and blue have lost drive and need a boost. Green makes up 70 percent of the picture compared to red and blue so the drive would not have to drop much to lose red and green but still have green. Keep in mind that this does mean that the CRTs are dying and may not have too much time left.

To turn up the drives first remove the back cover on the bottom half of the machine. Be very careful as you will have to work on this unit live. Do not touch anything other than what I tell you and keep one hand in your pocket whenever possible.

First look at the space above the main circuit board. Somewhere across the beam supporting the CRTs you will see a square box with 6 controls (shafts). You can locate the box if you follow the wires from the flyback to the box. The flyback is located on the power board and produces the high voltage. It will have 4 large red rubber wires coming out of it. Three go to the focus divider block (the box in question) then they go on to the crts (red, green, blue).

Once you locate the focus divider look at it closely. The focus controls are on top and the drives are on the bottom. They should be marked red, green and blue. You want to turn up the red and blue. Tune a picture with as much black as possible. While watching it turn up the red until you see a red tint or streak then turn down until it just disappears. Do the same with the blue. You may want to touch up the green also for good color balance.

If the set is working OK and the CRTs have enough drive left, your picture should look normal.

Thanks for using FixYa.

hardrocko

on Sep 22, 2010 | Toshiba 50H81 50" Rear Projection...

1 Answer

The picture has a red color


You need to First turn Color Off In the Menu then, Find the Screen and Focus Control Block
adjust the Red/Green/Blue Screen drives To a Black and White Picture, Then Go Back to Menu -Color and turn Color Back on.
Remove the Front Bottom Panel and Control Block is behind it. It will have 3 controls on top for Focus and 3 under them for Screen Drive to each Tube R/G/B

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1 Answer

Sony KP-53S65. Only have the green lens working. Blue and Red out. Everything else seems OK. What's going on with it?


mrrcody56,

If you have a picture, but only in green, I would try turning up the drive for the red and blue guns. They have probably changed and need a boost. This does mean that the CRTs are dying and may not have too much time left.

To turn up the drive first remove the back cover on the bottom. You will have to work on this unit live so be very careful and do not touch anything other than what I tell you.

Look at the space above the main circuit board. Somewhere across the beam supporting the CRTs you will see a square box with 6 controls (shafts). You can locate the box if you follow the wires from the flyback to the box. The flyback is located on the right rear corner and produces the high voltage. It will have 4 large red rubber wires coming out of it. Three go to the focus divider block (the box in question) then they go on to the crts (red, green, blue).

Once you locate the focus divider look at it closely. The focus controls are on top and the drives are on the bottom. They should be marked red, green and blue. You want to turn up the red and blue. Tune a picture with as much black as possible. While watching it turn up the red until you see a red tint or streak then turn down until it just disappears. Do the same with the blue. You may want to touch up the green also.

If the set is working OK your picture should look normal.

Thanks for using FixYa and for the generous rating.

hardrocko

Sep 21, 2010 | Sony KP-53S65 53" Rear Projection...

1 Answer

My color seems to be more green than should be and I have tried to reset the color with no help


You have a focus/screen control box Find it and adjust the R/G/B screen drives When you first start Go to Menu turn Color off then with a mirror adjust the picture as close as you can to a black and white picture R/G/B screen drives, the little control box you are looking for will have 3 controls on top for focus and 3 controls under them for screen drives to each tube red,green,blue after you have adjusted to a black and white picture then go back and turn color on.

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1 Answer

No sound on play back using camcorder on technika tv


Looks like you are using Component cables. There are five cables. The first three cables are Green,Blue and Red. These are the ones that are molded next to each other and are the Video signal cables. The other two cables are Red and White and they are the audio cables.
First to correctly hook up these cables you need to Connect (Match) Color for Color. (Green to Green, Blue to Blue, and Red to Red. To tell if you have correctly connected the Video cables is to look at the screen. If the picture looks ok (Normal with no colors missing then you have connected the video cables correctly). If you see a missing color meaning red, then switch the Red cables. The picture should be ok now. The remaining two cables are the Red and White cables. The "Red cable" is for the "Right" audio input and the "White" cable is for the "Left" audio Input". If all is connected correctly then you should have a good picture and Left and Right audio.

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1 Answer

Split colors on screen


Replace the two convergence Ics they are STK392-110 if your model is the 53FDX20B you can get replacement Ics with installation instructions at the following link.
http://servicemanuals.vstore.ca/

May 11, 2009 | Hitachi 53FDX20B 53" Rear Projection...

1 Answer

Will not show red color in picture, magic focus shows red though


You have a projection light element out. I had the green element go on mine. I had a service agreement so a repair tech changed it.

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1 Answer

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Hi George,

It sound's like an ink-feed issue:

1) Dirty heads, even after cleaning
2) No-ink or poor quality ink
3) Damaged head: some are part of the cartridge, some are not
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The test page is typically not as hi-res nor as saturated as a
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The color lines you see are actually lines of missing color,
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For example missing yellow will make a blue line.
Missing magenta will make a green line
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Clean the heads again and again, print again and again,
hoping to flush the system.

BUT, keep in mind that cleaning wastes huge amounts of
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1 Answer

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use the advanced options page and reset the factor blue and red convergence defaults then do re apply the auto color defaults color at first it seemed very red (which is good because red was the missing factor in the green picture) but after reseting all the color and tints to the normal ranges I then reset the color auto correct again and all seems fine.

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