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

2 Answers

Color convergence? turned on TV, only green color misaligned, mostly on left side, upper part of screen. Used magic focus, no effect. Daily use for 3 yrs.

Posted by scubadrew on

  • 2 more comments 
  • scubadrew Oct 24, 2007

    What are the correct value and wattage for the resistors that should be replaced when teh IK04, IK05 Amps are replaced.

  • scubadrew Oct 27, 2007

    I will try. I have the repair manual for the TV but the scanned image of the PCB layout isnt so good.  Have to actually look at the markings on the PCB under the resistors.  Cant measure resistors in ckt can I?  I want to buy a kit that has all the resistors and the two power amps and i would do the reapir all at once even if only one power amp (red and green misalgined) appears to be bad at this time.

  • scubadrew Dec 27, 2007

    On Dec 6th I repaired with the advice I got from this blog, awesome help to the Fix-Ya team. Parts arrived a day before (2 amps and the resistors suggested, cost about $45.00 for genuine Sanyo parts).

    I couldn't completely remove the convergence board, there were three high voltage wires plugged into a large transformer like assy and I tugged on the wires and they didn't seem to want to "unplug". I was able to do the work behind the TV given the length of the wires, moving the board to remove the STK392-150's. Replaced both (with new STK392-150's), no resistors appeared damaged, left them alone, measured them they seemed to be OK. Lesson Learned....dont try to unsolder the heat sinks with a hand solder gun (left them on and pried the old converg amps off of them). Solder wick worked well on the leads, removed old parts without too much problem. Got a small tube of heat sink paste from radio shack. Direct TV guy with HD DVR upgrade showed up as I was reassembling the TV. By the time he was done with the new LNB on the roof we turned everything on, ran magic focus and alignment (and HD 1080i picture) was great. Thanks Terryfic, worthy of a wiz rank.

  • akrepi Jul 23, 2008

    I have the same problem with the green line exactly as stated on the first post.. i tried to fix it with magic focus- manual no luck now when i press magic focus on the front wont work at all .. i live in london Ontario and would like to be pointed to the store where you got the set of IC's so i can go and get the same kit myself, please if you have some pictures of the board and things you changed would actually get my head straight as right now i am a bit confused..

    If someone has the kit number and the service manual please mail it to me

    i look forward to hearing from you... your help is much appritiated

    thankyou

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stealthtv

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Can anyone give me the resistor values for location RK 42, RK 46 and RK 62? Hitachi 46F500 TV. Or can I be pointed to the location of a service manual?
Tony

Posted on Jun 06, 2008

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Replace convergence IC's and then
activate magic focus

Posted on Oct 23, 2007

  • Vista Electronics Oct 24, 2007

    May not be any resistor damage = if they look bad,then check
    value with meter or give me location #............

  • Vista Electronics Oct 27, 2007

    Practice visual acuity technique! If the B+ resistors look good and check good ( in circuit ) then they are good!...Change  IC's

    then magic focus and see.....T.



    Best to use Hitachi IC STK 392-110 subs to upgrade

      STK 394-160E  made by Sanyo  part # CZ01341.....

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1 Answer

Left side of sreen is blurry/halo effect. Right side is normal. Magic focus stops when it gets to green and flashes green number 3 on bottom left of screen.


All projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

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 projection 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 pics of convergence problems.


7859b01.jpg

e87380c.jpg

Common 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

65af323.jpg

69189a5.pngSOLUTION

You 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

Jan 08, 2011 | Hitachi 51F500 51" Rear Projection...

1 Answer

3D effect where the blue color is a little lower than the rest of the colors. More noticeable on words.


Projection TV2_bing.gif 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.

Convergence problems are very common on all Projection TV sets including Sony, Samsung2_bing.gif, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith2_bing.gif, and others. You can get a convergenece repair kit from the link below.

Common Symptoms include....

  • Screen looks 3D2_bing.gif
  • 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 - TV may also make a chirping noise.
Here are some photos of convergence problems.

49abec3.jpg
f0add3d.jpg


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.

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 flash2_bing.gif 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 solution

93a1209.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 know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

May 20, 2010 | Philips 51PW9363 51" Rear Projection...

1 Answer

Upper left corner is distorted and neon green


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.

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 from the link below.

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 - TV may also make a chirping noise.
Here are some photos of convergence problems.

49abec3.jpg
f0add3d.jpg


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.

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 solution

93a1209.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 know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

May 06, 2010 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

Red, green, and blue lines at bottom of screen, mirror looking effect, also looks like 3D. Got at a garage sale so no manual.


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 projection 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.

42d3683.jpg

7859b01.jpg

e87380c.jpg
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 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

Jan 03, 2010 | Hitachi 43F300 43" Rear Projection...

1 Answer

Turned on TV this morning and the colors were out of alignment. TV works just looks funny. Tried the magic focus and got most of the screen lined up....except the upper left hand corner where the colors...


There is a convergence output kit for this set. There are probably resistors in the convergence circuit that are starting to loose there values. If you are going to have the set worked on have them install the whole kit which includes the convergence outputs and resistors. Thanks

Oct 27, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

I get a split up of red and green in a wave at top of screen


The convergence ICs and resistors are the most likely things to cause that. You can get the convergence repair kit for the DP14G hitachi( 53UXX10B) at the following link which contains the parts and instructions.
http://www.tvrepairkits.net/

Jul 11, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

Toshiba 41h81 green convergence problem


Below are two of the most common problems encountered with projection TV sets.

Problem #1 - CONVERGENCE PROBLEM

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.

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 from the link below.

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 - TV may also make a chirping noise.
Here are some photos of convergence problems.

49abec3.jpg
f0add3d.jpg


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.

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 solution

93a1209.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 know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

Apr 07, 2009 | Toshiba 42H81 42" Rear Projection...

1 Answer

Samsung Rear Projection Problem (not convergence)


The tv has 2 focus adjustments for each tube, mechanical and electrical.

1. Mechanical focus is set by looking at screen from back (through inspection plate on back of most samsungs) and rotating the lens assembly on CRT. loosen wing nut and turn lens assembly to go through focus and back to best position.

Put convergence pattern on screen and manually misadjust bottom red and green lines convergence so they can be seen through inspection hole.

With back cover of TV off you can usually reach your hand up beside the lens assembly to loosen the wing nut then rotate to adjust. Green is in the middle. The focus will be obvious when you rotate and look

When you are finished make sure the foam dust protector is not over any of the lens assemblies and the wing nut is tight.

2. Electrical focus - located at front of unit. the front grille/speaker cover is removed and maybe a cover over the front crt inspection hole.

In the inspection hole there is a black plastic "Focus/screen adjust Assembly" with 2 rows of 3 controls.

One row is focus and the other is screen. The middle controls are for green with R/B on either side. Usually the controls are labelled as "focus" and "screen". You want to adjust the focus controls, one for each color. Look for the focus or screen label imprinted in the plastic. Don't play with the screen settings.

With the same misadjusted convergence pattern you can see a red, blue and green line. Adjust green focus and watch green line for best focus. Do same for other 2.

Screen adjustments are very exact and delicate. The easiest way to deal with them is to turn color off in Customer adjust menu. Put any color tone adjustments in the middle (low, med, high, put at med).

You should have a b/w picture if there are no crt or other color related faults. If it is close to B/W leave screens alone.

If the pix is too green, then the green screen setting must be reduced a small amount. Do not play with these adjustments as most TV repairrers have a difficult time adjusting them.

If focus adjustments don't help then focus control or CRT may be defective. Needs expert to determine.

easyab

http://calgaryconvergencerepair.weebly.com/convergence-ics.html


Jun 24, 2008 | Samsung HCM4216W 42" Rear Projection...

1 Answer

Magic focus, #5 Manual


Sounds like a Convergence IC problem, the convergence ics would need to be replaced. This can be done by yourself or a professional.

Jun 06, 2008 | Hitachi 57S500 57" Rear Projection...

1 Answer

Green alignment


One of your convergence output IC's has burned out and needs to be replaced.

Jun 22, 2007 | Hitachi 53FDX20B 53" Rear Projection...

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