Question about Hitachi 46F500 46" Rear Projection HDTV-Ready Television

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Convergence Red & blue appear fine but green is bowed downward in upper right hand & lower left hand corners.

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Replace convergence IC's.
RE-check alignment

Posted on Oct 23, 2007


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Posted on Jan 02, 2017


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Hitachi UltraScan HD Projection Screen 43FDX01B

The convergence board is on the fritz! See and see if they have a kit just right for you!

Jan 12, 2010 | Hitachi 43FDX01B TV

1 Answer

My set is 10 yrs old. In the upper left and lower

Try adjusting the convergence. If it won't move see below- red IC in particular
This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually charge between $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail

Oct 18, 2009 | Sony KP-43HT20 43" Rear Projection...

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Red and Blue color bowing...

Hi, you`ve lost your convergence IC`s, At our shop here in western florida this runs right around $246.00, price will depend on your geographical location and who you call. gl, video-tek

May 29, 2009 | Hitachi 50FX30B 50" Rear Projection...

1 Answer

Bowed flickering green screen, black on bottom

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.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projeciton sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

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. Power light will blink. TV may also make a chirping noise.
Here are some photos of convergence problems.



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. And you should be able to get the grid straight.

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 fix


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 are handy and can follow directions. You can get complete repair kits from or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

Jan 25, 2009 | JVC AV-48WP30 48" Rear Projection...

1 Answer

I believe i have a model # 60pp9352 60 in rear proj the problem is with convergence but might be more intense as there is a blue lobe in the lower left hand corner and a curvurture in the left upper...

Convergence ICs there are two of them both STK392-120 and you will need two 6.8 ohm resistors. You can get the replacement parts at the following link with free installation instructions with pictures.

Aug 31, 2008 | Televison & Video

1 Answer

Red,Blue,Green Image

YOu have convergence issues. Ok first question. IN your setup menu do you have the convergence option/ if you DO not then it can be a specail fusable link. fl231 if you do. next question do the picture bow in at the middle. if you do then it possibly a convergence power supply issue. next if you go into setup convergence does the crosshairs adjust up or down left to right on both blue and red. I if so then theres is a chance that it can be a convergence adjusment or a amplifer problem AS always THIS SET CAN GENERATE LEATHAL 380 VOLTS EVEN WITH SET UPLUGED SO BE CAREFULL.

Jun 20, 2008 | RCA HD52W59 HDTV Projection Television

1 Answer

Selective "non-convergence" issues

Sounds like to may have a yoke loose on a tube. If it's not that, you may have somehow damaged the convergence board. Look for any cracks in the board. If you find any, solder across the beaks and it should be fine. Good luck and I hope this has helped in some way
NC Electronics
Mills, Wyoming

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Toshiba 40h80 picture problem

replace c449 and also the damper diode

Nov 19, 2007 | Toshiba 40H80 40" Rear Projection...

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Convergence problem, lower left corner fixed green gun convergence bows upward

You have a componet out of tolerance in the green drive circuits, resistor or capacitor. If you have the service manual you should be able to take some raedings off the test points for the circuit and be able to track it down. I am enclosing a link where you can purchase the service manual for that set for 10.99. They will mail it to you unless you go back to the site and request that they email it to you by clicking on the contact us link. They also offer unlimited free support if you purchase your manual. I am one of their support techs. Hope this helps. Heres the link

Dec 27, 2006 | Pioneer PRO-119 60" Rear Projection...

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