Question about Toshiba 53H71 53 in. Rear Projection Television

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Hitachi 65F710 convergence problem

Hello I own a 65 inch Hitachi model 65F710, can not get colors lined up magic focus is not correcting it . manually can not move colors to adjust. how dificult is it to replace convergence board?. Im a technician at trade. and which board is it on my unit thank you.

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  • bgpapa Nov 21, 2008

    Thank you for your quick response. On my Hitachi 65F710 , your saying the convergence board is solder on to another board is it a chip that im removing and replacing. thank you

  • bgpapa Nov 21, 2008

    ok I have looked at boards , on this unit I have 2 large boards. now your saying aprox 4x4 board is the convergence board . is that located in the crome box where the cable card goes . 65f710A Hitachi is what i have, and the only other boards around that size i see is the boards under each lamp. sorry but do appriciate you helping me . thank you

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You have to unsolder the old one and put in the new one it should be located just forward of the tuner

Posted on Nov 20, 2008

  • Ronnie Houston Nov 21, 2008

    it us about a 4x4 inch board you have to remove and replace

  • Ronnie Houston Nov 21, 2008

    the board is inside an aluminum casing and is not connected to the tuner...its midway towards the middle of the tv and as i said its a 4x4 box

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I can not get the tv show a picture
even when i use my vhs
am i suppose to have it on a certain channel
thnaks

Posted on Apr 24, 2009

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1 Answer

Convergence


I presume it is Hitachi---if Magic Focus does not correct the problem--the convergence chips need to be replaced.

Based on a MODEL NUMBER several sites on the internet sell kits etc.

I am available to help if you provide me with a model number and some idea of your skill level.



1_17_2012_3_07_47_am.jpg

Jan 17, 2012 | Hitachi Projection Televisions

1 Answer

Set 51uwx20b, how do i fix magic flash to reset factory settings


Convergence board needs repair, google you model # and see if you can purchase a repair kit.

Nov 22, 2011 | Hitachi 51UWX20B 51" Rear Projection...

1 Answer

I have a 65 inch Hitachi projection TV and all of a sudden lines apperaed on the screen that runs across the upper part of screen. I tried using the"Magic Focus" setting to get rid of these lines...


The tv Magic Focus button don't solved these R,G,B colors lines mis alignments problems.Mean ur tv have a convergence pictures problems,it is dead.Ur tv now have any colors lines like R,G,B mis alignments,have a colors shadows picture or a 3D pictures look alike?Yes,mean ur tv convergence board it is dead to causes all of these pictures problems.The tv convergence board must have to repair like replacing 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board to solved the tv convergence pictures problems.The tvs shops will cost u like $300-350 for parts and labors.

Sep 24, 2011 | Hitachi 65S500 65" HDTV-Ready Rear...

1 Answer

The top of the screen is yellow color then drops down in a swoop and more yellow and blue. otherwise picture is good, pushed the magic focus but it did no good. thanks for any help


The magic focus button don't work.The tv have a problems known as a convergence problems,it dead.The tv colors lines R,G,B mis alignment,have colors shadows or 3D pictures.The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts,must be replaced on the tv convergence board to solved the tv convergence picture problems.The shop,will cost u $300-350 for parts and labors.

Oct 15, 2010 | Hitachi 65TWX20B 65" Rear Projection...

2 Answers

Hitachi 43fwx20b Convergence Problems


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. 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, Zenith, and others. You can get a convergenece repair kit wiith 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 - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV 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 here
bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Feb 25, 2010 | Hitachi 43FWX20B 43" Rear Projection...

1 Answer

Maybe converrgance


If the magic focus doesnt correct the issue you will need to install the Convergence repair kit for your model. You should be able to get one at the following link. Leave them a email or call if you dont see your model as they add new kits everyday or two.
http://www.tvrepairworld.com/

Jul 20, 2009 | Hitachi 61SWX10B 61" Rear Projection...

1 Answer

Can't set red convergence on 65" Hitachi


Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:
ee1ca68.jpg

You can see more examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Dec 24, 2008 | Hitachi Director's Series 65XWX20B 65"...

2 Answers

1993 Hitachi Projection Screen TV


Hi Dennis!

Your HItachi has an automatic color convergence (color beam alignment) feature called "Magic Focus" which can be accessed from the set-up menu. When selected, you will be prompted to push the front panel "Magic Focus" button... do so only one time and do not hold the button in more than three seconds to enter this mode. The process takes about 90 seconds to complete, but a second push of the button will stop the process with no change.

If the convergence is still bad after the auto-correction process, then the guns are misaligned beyond its corrective capabilities, and would require manual convergence.

A service manual detailing how to do this is available for a nominal charge at http://www.how2files.com/bykey.php/hitachi.

If you don't have one, a free download of the user's manual is available at https://merchant.satisfusion.com/sf/WarrantyCenter/registration/secure/Hitachi/Manuals/ModelNumberManualLinks.jsp?masterModelOID=SF-990486114-595&random=1213688278588.

Hope this is helpful, let us know if you have any other questions, and good luck!

Thanks!
-WildBill

Jun 17, 2008 | Hitachi 53SBX01B 53" Rear Projection...

2 Answers

Hitachi 65SWX20B 65 in. Rear... Problem


Your TV most likely has one or more possible problems.

Problem #1: 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
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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.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, 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.

578ba6c.jpg
TV set after fluid change

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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.

Jan 15, 2008 | Hitachi 65SWX20B 65" Rear Projection...

4 Answers

Colors all messed up


The fact that you used the term "magic focus" tells me you have a Hitachi projection set. When the colors no longer line up on a Hitachi projection TV, it means that most likely one of the convergence output IC's has shorted out. Sometimes a shorted convergence output IC will burn up a low value resistor too. I have also seen a convergence IC crack loose from the board and burn up 3 low-value resistors. If your set is using the STK392-110 IC's, it is probably a good idea to go ahead and replace both IC's with the newer upgraded STK392-150 IC's. The output IC's should be resoldered / replaced and the circuits checked and realigned by a qualified tech familiar with Hitachi projection sets.

Sep 09, 2007 | Hitachi 61SWX10B 61" Rear Projection...

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