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I tried to manually focus the grids on my hitachi projection tv and I can't get the lines to line up. The top and bottom blue lines are curved, the colors don't line up except in the center. I would appreciate any help I can get. Thank-you

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This is a defect in the convergence circuit and is either poor solder connections at the convergence ICs or defective ICs. These are large black ICs attached to a heatsink and should be marked STKxxx. If you can solder, try resoldering the pins on these ICs first. If that fails, replace the ICs. If you need more details, please update this with the model number.

Thanks,
Dan

Posted on Jul 25, 2009

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Hitachi 61UWX10BA Convergence Still Off After Chip Replacement


Remove Front bottom Panel thier you will see front of convergence board there is a small blue contact switich with TV on press and hold it for 5 sec then you should see convergence Pattern so you can aline convergence correctly I have the whole Manual to tv just have to find it. anyway for now try this.

Dec 01, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

Hitachi 43fwx20b


Your vertical amp is failing and you will have to get it replaced. If your TV is under warranty, i suggest contacting the shop or manufacturer and get it fixed/replaced.

If not, then you will need to contact a qualified TV repairman to replace the vertical amp for you, as i wouldn't recommend opening the TV set to try a DIY..

Hope that helps. Should you have any further queries, pleas post back, and I will try to assist you as best I can..

Jun 12, 2008 | Hitachi 43FWX20B 43" Rear Projection...

1 Answer

Hitachi 53UWX10BA dynamic convergence works but blue is blurry


I know this set very well---you are saying convergence adjusts ok everywhere? If you understand that the blue is usually de-focused a little----there are only two ways to adjust the focus of each tube-----

1.) Behind the front speaker grill there is an inspection plate---with it removed you will see a small black plastic block with 6 controls on it; it is the MASTER SCREEN/ FOCUS BLOCK

2.) THREE of the controls left to right are Screen controls(red, green and blue) and the other 3 are FOCUS--IT IS ALL black and you need to look close to identify which is focus and which is screen---you are looking for the BLUE focus control(one of the 6)

3.) With the convergence grid on screen cover the RED and GREEN lens in the set and try to adjust the focus of the blue(I presume you know how to put the set into the Convergence mode?

4.) The only other way to adjust the Blue focus is from the back of the set---with the Red and Green lens covered up place a blanket over the top of the set that covers the whole screen--from the back of the set you will note that all three of the black focal lens have a wing nut---with the convergence grid up and only blue lines present(Green and Red lens covered with a cloth) look from behind the set at the grid---loosen the wing nut on the blue lens and slowly slide the lens left or right until the blue has the best focus possible----if it will not adjust with the focal lens or the front focus control you have a circuit problem.

I do this here for free and if this information helps you take a minute and give me a vote here. If you have any questions or need advice reply to this posting here and I will assist you.

SD TECH

Sep 14, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

Top of picture has distorted curve


Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV 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, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit from the link below.

Common Symptoms include....
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on - TV may also make a chirping noise.
Here are some photos of convergence problems.

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Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a solution

93a1209.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

Aug 15, 2009 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Blue outline on the top half of the picture on my Hitachi 51F500


your convergence ic is going bad. usually worth the repairl.

Jun 04, 2009 | Hitachi 51F500 51" Rear Projection...

1 Answer

Hitachi 46F500 and there is a blue curved bar


Your TV most likely has a Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
701cb04.jpg
77ea520.jpg
f0900cb.jpg

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together convergence repair kits for most models.

The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.

May 15, 2009 | Hitachi 46F500 46" Rear Projection...

1 Answer

Green cruve line


Good Day;
Suspect Convergence IC's STK4274, part Number 2003191. Replace all three IK04(red), IK05(green), IK06(blue).
Good Luck, big IRISH.

Aug 30, 2008 | Hitachi 50UX26B/27K 50" Rear Projection...

1 Answer

Magic focus grid not straight.


i'm no expert by any means; but I wonder if it could be as simple as the reflective screening on the inside comming loose. I have a 65" and I took it apart to clean it. The reflective screening looked to me like it could be a weak point. Just a thought.

Jul 04, 2008 | Hitachi 46W500 46 in. TV/DVD Combo

1 Answer

Hitachi 57SWX20B 3D Effect due to green light convergence problem


I'm trying to fix the issue on my 43FDX20B. So far, I'm able to move the lines up and down, but can't get the left/right motion to fix it. The attached link has the dynamic mode instructions, so you can correct this issue yourself.

http://home.comcast.net/~leebailey00/Hitachi_DCAM_Manual.pdf

The only thing I didn't have was the screen overlay jig the manual talks about. I decided to create one myself and use the screen as a beginning template. I went to our local hardware store and picked up some home window weather covering. The roll cost about $15, is a clear strong plastic and the template was very easy to create. I used a straight edge after I put dots on the plastic and measured the lines for being square and equal after I took it off my tv. Good thing is that if you don't like what you make the first time, you have a 25' roll to use to try again (ha).

Mar 01, 2008 | Hitachi 57SWX20B 57" Rear Projection...

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