Question about Hitachi 50FX18B/19K 50" Rear Projection Television

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I have a hitachi 50FX18B and the convergence lines are not lining up and the picture looks like you are looking through 3D glasses. How do I fix this??

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  • arturo_p72 Jan 23, 2009

    Do the ICs have red wires attached to them?

  • Anonymous Feb 10, 2009

    I found the ICs. My question, is how do I remove the heatsink to get to the ICs? Do I need to remove the whole circuit board? Please advice.



    Thank you

  • Anonymous Feb 12, 2009

    I found the 3 ICs. My question, is how do I remove the heatsink to get to the ICs? Do I need to remove the whole circuit board? Please advice.

  • artie72 Feb 18, 2009

    I found the 3 ICs. My question, is how do I remove the heatsink to get to the ICs? Do I need to remove the whole circuit board? Please advice

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This is a problem with the convergence circuit. If you can solder, you can fix this yourself. Please note as well that there are potentially dangerous high voltages present even when the set is unplugged. That being said... Open up the back and locate the convergence ICs (large black ICs attached to a heatsink and marked STKxxx). Try resoldering the pins on these ICs first. If that fails to resolve the problem, replace the ICs. There may be other related components that need to be replaced as well, but start with the ICs.

Keep us posted.
Dan

Posted on Jan 22, 2009

  • ABRsvcs Jan 23, 2009

    Nope. These ICs should be about 1.5" x 3". They will be flat, black and attached to a silver colored heatsink. The parts with the red wires are the flyback transformer or splitter. Those red wires will have 33,000Volts inside. Be careful around them. These ICs will have 15-20 pins as well.



    Dan

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1 Answer

3d look with little bending in bottom left corner of screen.


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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 a convergenece repair kit with instructions from the links below.

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

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*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

You can see some more examples and find a fix herebb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Apr 04, 2010 | Hitachi 52LDX99B 52" Rear Projection...

2 Answers

Hitachi 43FDX Rear Projection TV


If the picture was good prior to the 3D images, I would fix it. The convergence ICs either have poor connections or are defective. The IC is an STK392-110. There may be 2 inside the set. If you have this repaired, expect a labor cost in the $200 range. Request that the ICs be replaced rather than the board changed. This will maintain all of the internal settings and require only part replacement not a complete re-convergence adjustment.

Keep us posted.

Dan

May 01, 2009 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

I have a hitachi 50FX18B and the convergence lines are not aligne


Yes - You will need to either remove the circuit board or lift up the tray. If you are not sure how to do it yourself read the link below.

  • This is a very common failure on Projection TV sets.
  • 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.
You can see some example photos and find a solution here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Feb 24, 2009 | Hitachi 50FX18B/19K 50" Rear Projection...

1 Answer

I have a hitachi 50FX18B and the convergence lines...


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.

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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. 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

69189a5.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 are handy and can follow directions. You can get complete repair kits from TvRepairKits.com 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 23, 2009 | Hitachi 50FX18B/19K 50" Rear Projection...

1 Answer

Hitachi 50fx18b 50" projection no power


Does it chirp? If so you need convergence chips replaced.

Read the link below.

Yes - You will need to either remove the circuit board or lift up the tray. If you are not sure how to do it yourself read the link below.

  • This is a very common failure on Projection TV sets.
  • 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 Makes Chirping Sound
You can see some example photos and find a solution here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jan 07, 2009 | Hitachi 50FX18B/19K 50" Rear Projection...

1 Answer

50 inch rear projection Hitachi looks like your watching in 3d


This is a convergence problem and igf you can solder, you can probably fix this yourself. If you feel comfortable working inside the set, and are aware of the dangers of the high voltage present there. try the following: Resolder the pins on the convergence ICs. If that fails to resolve the problem, replace the ICs. These are large black ICs attached to a heatsink and should be marked STKxxx.

Keep us posted.

Dan

Nov 24, 2008 | Hitachi 50FX18B/19K 50" Rear Projection...

1 Answer

1996 Hitachi 50FX18B 50"


Yes - You will need to either remove the circuit board or lift up the tray. If you are not sure how to do it yourself read the link below.

  • This is a very common failure on Projection TV sets.
  • 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.
You can see some example photos and find a solution here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jul 24, 2008 | Hitachi 50FX18B/19K 50" Rear Projection...

2 Answers

Hitachi ultrascan HD pic looks like a 3D movie w/o the glasses


Take a look a the video below to determine if you have a true convergence problem or if you can make the adjustment through the menu feature on your TVs original remote.

Apr 03, 2008 | Hitachi 61SDX01B 61" Rear Projection...

1 Answer

Convergence Problem


http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220

Dec 02, 2007 | Hitachi 53SDX01B 53" Rear Projection...

1 Answer

Convergence Problem


http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
replace convergence ic

Oct 16, 2007 | Hitachi 61UWX10B 61" Rear Projection...

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