Question about Hitachi 43UWX10B 43" Rear Projection Television

1 Answer

Problems with convergance and possible blown resistors

Hello I am having problems with the white green and pink or red not lining up properly. I opened the back and found a resistor rk58 that measures .5214 Mega Ohms. The resistor is discolored so I can not tell the rating of it. I would also need to know the ratings of the other associated resistors. Any help would be great.

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  • yankees1 Mar 21, 2008

    There isn't any load on it when it is measured unless there is some type of capacitance somewhere. Or am I wrong in that assumption.

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1 Answer

Your convegence amp ic 's are faulty,that resistor is possibly opened under load from the faulty ic's.

Posted on Mar 21, 2008

2 Suggested Answers

Riztech
  • 731 Answers

SOURCE: Convergance issues and possible suspect resistor

Hi,

Try the changing the Cable.This has fixed many convergence problem.

Regards.
Riz

Posted on Mar 21, 2008

Riztech
  • 731 Answers

SOURCE: I hit the accept key without resolution after paying for online assistance

Hi

>>Does the chip STK392-120, looks burned.
if yes, replace it.That will fix the problem.

>>There are two IC's, a 392-150 will be the best replacement, and if there are any large burned resistors on that board (should be pretty obvious), then they need to be replaced, too. If there are , let me know the board designator number (it will be "RK-XXX")

Thanks

Riz

Posted on Mar 21, 2008

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The picture all of a sudden became blurred , color convergence is not aligned and there is a pink wave at the top left of the screen and a green wave at the bottom of the screen. When the color is adjusted...


Tv have convergence problems,it dead.Colors lines R,G,B don't aligned.The tv convergence board is dead.The 2 STK convergence ICS and some or all it resistors are dead,these parts must be replaced to solved the tv pictures covergence problems.The shop,will cost u $300-350 for parts and labors.

Sep 18, 2010 | Sony KP-43HT20 43" Rear Projection...

1 Answer

Double picture and colors are neon green and pink


Your TV most likely has fone of two possible problems.

Problem #1 - Failure in the convergence circuits. ( 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.
Here are some photos of convergence problems.

3dc9420.jpg
645fba6.jpg
0dcec37.jpg
Here is a quick test....

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

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

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

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed. Notice how dull the colors are and how white the screen looks. The screen may also look red, orange, dull, etc.

9e7eb5b.jpg

TV set after fluid change. Notice how bright the colors are now. Everthing looks crisp and sharp again.

182c282.jpg



2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

May 20, 2009 | Zenith R57W46 57" Rear Projection...

1 Answer

Sometimes after the my TV is one for 20 mins or so the screen warps, shooting white/pink/green lights across the top and bottom of the screen and placing a horizontal black line at the bottom like hal


Your TV most likely has a problem in the convergence circuits. ( 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.
Here are some photos of convergence problems.

3dc9420.jpg
645fba6.jpg
0dcec37.jpg
Here is a quick test....

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

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

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

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

May 19, 2009 | Hitachi 50FX20B 50" Rear Projection...

2 Answers

Convergence on top of screen and 3D bended lines (yellow & pink lines).


Hi,
It is failure of convergence out ICs causing 3-D type picture on screen, you need to replace two big ICs in convergence section on main board.
Click Part Store to see an image of IC as well as price info.

If you need service manual of 43FWX20B, let me know to provide you a copy.
Thanks.

Apr 25, 2009 | Hitachi 43FWX20B 43" Rear Projection...

1 Answer

Pink and green with double writing


Are you able to do a multipoint convergence adjustment in the convergence menu? Do the red and blue adjustments move in all four directions/ Let me know and I will try to assist you.If the anser is no to either problem you will need new convergence ICs and convergence resistors.

Jan 08, 2009 | Philips 60P8341 60" Rear Projection...

1 Answer

Arched pink lines across screen. Now green and pink double stacked wording.


Projection sets have two very common problems.

The first common problem is convergence


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,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

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

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

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

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Oct 25, 2008 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Samsung HCN4226 Convergence.


Did you remove one side of the resistors from circuit to check them? If you leave them in circuit a blown resistor will test good as it will read the resistance from the surrounding resistors. Usually its the 3.9 ohm resistors identified bu the bands orange,white ,gold and red. and also the 150 ohm identified by the bands brown, green, brown and gold

Jun 23, 2008 | Projection Televisions

1 Answer

Convergence


Did you remove 1 leg of each resistor out of circuit when you checked the resistors? sounds like thier is still one resistor open or maybe one of the new IC pins need abit more solder.

Apr 09, 2008 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

I hit the accept key without resolution after paying for online assistance


Hi

>>Does the chip STK392-120, looks burned.
if yes, replace it.That will fix the problem.

>>There are two IC's, a 392-150 will be the best replacement, and if there are any large burned resistors on that board (should be pretty obvious), then they need to be replaced, too. If there are , let me know the board designator number (it will be "RK-XXX")

Thanks

Riz

Mar 21, 2008 | Hitachi 43UWX10B 43" Rear Projection...

4 Answers

Convergance issues and possible suspect resistor


Hi,

Try the changing the Cable.This has fixed many convergence problem.

Regards.
Riz

Mar 21, 2008 | Hitachi 43UWX10B 43" Rear Projection...

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