Question about Hitachi 43FWX20B 43" Rear Projection Television

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Color line up


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  • panchorican Mar 18, 2008

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  • Movie kid Mar 29, 2008

    I just encountered the same problem. It's as if a red lens has slipped out of registration. The red is also wavy. Is this an expensive repair? Is there anything I can do to fix it myself?


  • guru1968 Jul 01, 2008

    I have a Hitachi model 43FWX20B and this morning there is a red and green mis-match on my screen. I tried using magic focus but it bombs out on the green screen and flashes the number 5 in the lower right corner. Still not working correctly. What am I looking at if I call a repair person to fix this? Is this something I can fix? If so, how? Thank you in advance.


  • Jaime Hernandez May 11, 2010

    Those lenses (CRT's) do not need to be adjusted manually if no-one touched them before.

    The adjustments you are referring to only can be adjusted by replacing the convergence STK ICs, this failure is common on the rear projection TVs.

    Let me know what is the exact model and chassis number to tell you the parts number to fix the TV.



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Good Day,

This is a common problem with this TV, but there is an upgrade to correct the CONVERVGENCE circuit problem.
If you want to repair this concern yourself: Contact: B&D ENTERPRISES,
1-800-458-6053, and ask for KIT10 for your Hitachi TV.
If you want some else to do the repair for you call an Authorized Service Center.
Good Luck, big IRISH.

Posted on Aug 16, 2008


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1 Answer

TV has multi color lines and a circle when I turn it on

Sony rear-projection TVs provide a large-screened entertainment solution for your home or office. Unfortunately, color problems and yellow and blue spots and saturation can occur on the face of the Sony rear-projection TV. These problems can be the effect of damaged cables, electronic interference from other devices or dirty lenses on the inside of the rear of the television set. You can troubleshoot for these problems and make satisfactory repairs without the help of a repairman. No experience with Sony rear-projection TVs is necessary.Step 1
Check the audio/video cable that connects the Sony rear-projection TV to the cable or satellite receiver. This black cable has a number of multi-colored plugs on each of its ends. Ensure that this cable is not visibly damaged in any way, and that each of the plugs is in good shape and is not bent. A damaged audio/video cable will negatively affect the quality of your rear-projection TV's display and may lead to yellow and blue saturation problems and various other display irregularities.
Step 2
Ensure that there are no other high-powered electronics in the close vicinity of your Sony TV. Speakers, computers and other similar electronic devices use a large amount of power and in turn may give off a lot of electronic interference. This interference can cause problems for your rear-projection TV's screen, such as color blurring and similar color issues. Move any such potential devices to an area that isn't as close to your Sony TV. The color blurring and yellow and blue saturation problems should then decrease over time.
Step 3
Unplug the TV if problems persist. Ensure that the Sony is completely disconnected from all power sources. This is for your safety.
Step 4
Place a towel on the floor of the area where you are going to operate on the TV. Carefully turn the TV facedown on the towel, so that the rear of the TV is facing upward.
Step 5
Remove all the screws from the back cover of the television set using a Phillips screwdriver. Remove the back cover piece by working around the edges with your fingers and gently prying the piece off.
Step 6
There will be three upright lenses in the back of the television. Cleaning these lenses can alleviate picture quality problems and color blurring. Use a soft cloth and soap and water to clean the lenses of the television. Avoid using any other cleaning solutions, as soap and water is the only universally recommended cleaner from rear-projection manufacturers like Sony.
Step 7
Ensure that the lenses are dried. Replace the back cover of the rear-projection TV and reinsert all screws using the Phillips screwdriver.

Jun 19, 2016 | Televison & Video

1 Answer

The color is going out, but all 3 bulbs look good when I opened the back. What's wrong?

If the color is just dull then the CRT fluid in the three lenses ontop of the tubes needs to be replaced. This is a common problem. You can get the fluid from or similar sites.

Aug 18, 2011 | Philips 55PW9363 55" Rear Projection...

1 Answer

I have philips model 60pw93617f rear projecton tv the picture is not as crisp and bright color off . i took apart all three builbs light i vacumd and dusted inside do you have any hints that might bring it...


When you say that you took apart all three bulbs, I hope you did not remove the lenses from the front as alignment is very critical. Some of your problems are undoubtedly convergence related and others are dust and foreign film on the lenses, mirrors and screen. I have a tip at which explains the proper procedure for cleaning a projection TV. Do that first and reassemble the unit.

Next do a convergence adjustment. This will require going into the menu and finding the convergence menu following your models instructions. If you do not have the manual you can normally find it on the manufacturers website. Your model number is not listed. Double check that you have the correct model number and go to

and input the correct number to get a download of your user manual. Find the convergence procedure and do the major convergence setup. After performing the convergence set up your set will be as good as it can get considering the age and use.

Thanks for using FixYa and for the great rating. Please consider a testimonial. Thank you.


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Have a samsumg 67 inch-- HLR6768w tvworks ,when i replace color weel , i discover there is a part w magnifire lenses (located between color wheel and lcd board assembly) lenses inside are cracked,how can...

Yes ,its the Light Engine also known as Optical unit Assy block
Go to Encompass Parts Distribution 1-800-638-3328 and look up your Model #
Samsung 1-800-627-4368 (PTS 1-800-844-7871) (UED 1-800-648-6657)
PN# BP96-01198 E

Nov 06, 2010 | Samsung HLR6768W 67" Rear Projection HDTV

1 Answer

Blue wave across top, opened up, cleaned mirror and lenses, blew out dust in lower portion.

not a clear description... could be a blue retrace line(problem with blue picture tube) or blue convergence(defective convergence IC)

Oct 29, 2010 | Hitachi 43UWX10B 43" Rear Projection...

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Convergence issues on Sony KP-51HW40

you cant realign them they are factory set so you would need to replace them if the colors are out of line or you cant reset it manually. the tube are preset and not meant to be redajusted

Dec 14, 2008 | Sony KP-51HW40 51" Rear Projection...

1 Answer

1999 zenith 52 inch rear projection screen t.v.

IS the screen white retrace lines ? Have you looked into the CRT lenses while they are on with a signal applied through the input to see if an image is displayed in the lens lens of the crt? Let me know what the answer is to these two questions and we will go to the next level.

Apr 10, 2008 | Zenith B50M88W 50" Rear Projection...

1 Answer

Appears that lint is on one of the lenses

this could be a contaminant inside one of the lenses, or possibly spider webs inside the tv.. This is a very common problem. Remove the back of the tv, you will be able to look around the back of the screen with a flashlight and see if there are any spiderwebs. at this time you should also clean your lenses and mirror with some glass cleaner . this will improve your picture as well.

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RCA 52" HDTV Rear Projection TV MM52110JX1

Replace FL231 400ma fuse. this will fix your problem.

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