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

1 Answer

Color convergence problem

So I've changed out both IC's on the board and I still have the same problem with the 3D screen. I've been doin some research on this site and read that it might also be the digital convergence box. Is this a correct diagnosis? And is it the same type of repair requiring
de-soldering the box and soldering it back in? Changing the IC's was no where near as difficult as I thought.

Thanks in advance for all the info I've found on here!!!

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  • i0kepa Feb 17, 2009

    where can I get a schematic of which resistors to check or change? and where can I get a list of what resistors i will need to purchase.

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Follow the traces on the PC board from the ICs and you should find either pico fuses marked as Fxxx on the board or low valued resistors that may appear to be a bit burned. Some of those parts may be defective. These are the "feed" resistors or fuses for the power to the ICs. The low valued resistors are current limiting resistors that act like fuses. If any of those are open, the convergence ICs won't function properly.

Dan

Posted on Feb 16, 2009

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2 Answers

Looks like its in 3d red and green


Please do us a favor and rate this solution after reading.

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. Repair kits with instructions are also avail from www.TvRepairKits.com

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
69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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

Please do us a favor and rate this solution after reading

May 14, 2011 | Hitachi 43F300 43" Rear Projection...

1 Answer

60pp9753/17 replaced convergence ic chips power light comes on blinks once but no picture or sound. checked power supply slight humming noise coming from the ssb area small red light on the circuit board...


Soldering or bad IC chips...

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. Repair kits with instructions are also avail from www.TvRepairKits.com

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
69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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

Mar 15, 2011 | Philips 60PP9753 60" Rear Projection...

2 Answers

I have a convergence problem in the bottom of the lower left quadrant pf the screen. It is like a parabolic semi circle that is at the very bottom edge of the screen. The front screen isn't damaged at...


Tv 100% have a convergence problems,if any parts of the tv picture colors lines R,G,B are mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergence board the 2 STK ICS and some or all it resistors are dead.These parts on the tv convergence board,must be replaced to solved the tv pictures convergence problems.The shop,will cost u like $300-350 for parts and labors.

Nov 23, 2010 | Panasonic PT-47WX49 47" Rear Projection...

2 Answers

The tv looks like it is in 3d. when i try to adjust the convergiance the plus signs on the left are bent


do not play with this tv replace the stk ic chips and the resistors around the stk chips ,cant miss em about 2 inches big with heat sinks on them.

Sep 11, 2010 | JVC AV-48WP30 48" Rear Projection...

2 Answers

I have a sony kp 48s and there seems to be a blue shadow on the picture?? i've tried everything in the settings to fix it but it just seems like a manufacture malfunction?


You probably need to get a Sony TV Convergence Kit. More information can be found using the link below.

Convergence Symptoms:
  • Screen Looks Distorted/3D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
You can see some examples and find a fix here...

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

Feb 28, 2010 | Sony Projection Televisions

2 Answers

Colors on tv are blurry, almost like when you watch a movie in 3-d, the red and green colors seem to go around the main image


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 $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

Nov 13, 2009 | Philips Magnavox 50ML8105D 50" HDTV DLP TV

2 Answers

Convergence on top of screen and 3D bended lines (yellow & pink lines).


Hi,
It is failure of convergence out ICs causing 3-D type picture on screen, you need to replace two big ICs in convergence section on main board.
Click Part Store to see an image of IC as well as price info.

If you need service manual of 43FWX20B, let me know to provide you a copy.
Thanks.

Apr 25, 2009 | Hitachi 43FWX20B 43" Rear Projection...

1 Answer

The Screen looks 3D & Colors don't line up on my big screen????


If the convergence is off more than 1/2 inch or so you can't adjust. you have a failure of hardware. most likely the output IC. This set has 2 outputs for convergence. Each output contains 3 circuits, Six circuits altogether 2 red ,2 blue and 2 green. The normal customer adjustment will only alow adjustment of blue and red. They should be converged onto the green. There is a much more complex adjustment in the service mode for Geometry and convergence. These adjustments are only needed when you replace a failed componnent like the output ic. These ICs have been upgraded several times since the production of this set. The latest and most powerfull version is STK394-160. If feel up to it I suggest changing both outputs and the corresponding output resistors. Then do a complete geometry and convergence alignment.

Apr 16, 2009 | Hitachi 50UX57B 50" Rear Projection...

2 Answers

Auto Convergence Problem, no menu option, 3d looking picture


yes the board components are out.not to replace whole board only two convergence ic on the board needs replacement. they are not at all costly this link which is mentioned belkow has all the instructions to replace the ic on the board just click it and follow the instructions  http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
 

Mar 07, 2009 | RCA R52WH73 Projection Television

2 Answers

PT-53WX52


Your TV most likely has a 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
f0900cb.jpg

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together convergence repair kits for most models.

The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.

Dec 02, 2007 | Panasonic PT-53WX52 53" Rear Projection...

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