Question about Projection Televisions

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Our hitachi 50 inch tv has started having red and green lines in it....it is more on the left side of the screen. Also it has a smeared looked...like a shadow.......double look to it.......can this be fixed?

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  • hcsimcox Apr 07, 2008

    The model # is 53UWX10BA

  • hcsimcox Apr 07, 2008

    The model # is 53UWX10BA

  • hcsimcox Apr 07, 2008

    I gave you the model # and Im waiting on a reply......please answer me...thanks

  • hcsimcox Apr 09, 2008

    can you show me the locations of the icus......I dont know where they are located.
    Thankx

  • hcsimcox Apr 12, 2008

    If we replace the ic's with new ones.......do you think other things are apt to tear up on this TV. I have heard this might happen. Also I am thinking of buying a new TV.....what brand and model is the best as far as workmanship and longevity........thank you for your response. We are wanting an lcd for sure. Thanks

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Unit has bad convergence IC's and maybe open resistors. If your technically inclined you can replace the ic's yourself and look for burned resistors. I would need your model # to give you the ic locations and part #;s

Posted on Apr 07, 2008

  • Les Price Apr 08, 2008

    The ic's are IK04 and IK05 and the Hitachi part # is CZ01341 and the generic ic # is STK394-160. Replace both ic's and be sure to check all resistors around the ic's expecially RK42, 46, 50, 54, 58, 62.

  • Les Price Apr 13, 2008

    As long as you replace the ic's with quality ic's and not knock offs and all resistors are good, this repair will hold up. As far as a new tv and especially LCD I reccomend Sharp Aquos first then Sony, LG, Samsung.

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1 Answer

Color shadowing on screen


I had similar symptoms about a year ago. Also came on sudden. The red convergence chip had burned out (poor heat sinking on this model Hitachi). Replacing the color convergence chips fixed it. ($50 for parts.) First, however, have you tried the "magic focus" function? That's explained in the manual, which is available online IIRC, but I'd have to look for the link if you need it.

Mar 02, 2010 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Samsung HCN4727W Rear Projection TV, green screen, audio works


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,Akai2_bing.gif,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link 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

bb0cf99.pngYou 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

Jul 10, 2009 | Samsung HL-R4667W Rear Projection...

1 Answer

50 inch hitachi tv, shadow behind writing and crooked screen


Normal 0 MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} The best advice I can tell you at this point is to go to tvrepairkits.com and order the complete convergence kit for your model of TV set, no need to search and order multiple parts from different sources and pay multiple shipping fees! The kit comes with original Sanyo STK IC’S , not those cheap aftermarket or china made IC’S full pictorial directions, the thermal paste, resistors, the correct Pico fuses, AND free live on-Line tech assistance in case you run into a problem with the repair. They ship out 2 to 3 day Priority mail, the next day in most cases GOOD LUCK!!!
Larry Dillon, senior tech/tvrepairkits.com

Jul 05, 2009 | Hitachi UltraVision CineForm 55VG825 55"...

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...

1 Answer

Green cruve line


Good Day;
Suspect Convergence IC's STK4274, part Number 2003191. Replace all three IK04(red), IK05(green), IK06(blue).
Good Luck, big IRISH.

Aug 30, 2008 | Hitachi 50UX26B/27K 50" Rear Projection...

1 Answer

Hitachi Projection tv


Projection TV sets have two very common problems listed below.

Problem #1) Convergence


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 more information and a DIY convergenece repair kit with instructions from the link below.

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

*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

bb0cf99.pngYou 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

Jul 17, 2008 | Hitachi 43F300 43" Rear Projection...

1 Answer

Tv help


Symptom: PICTURE PULLS
Cause: DEFECTIVE D702,D703,D704
Symptom: DIGITAL CONVERGENCE WON'T ADJUST
Cause: DEFECTIVE DCU

Jan 14, 2008 | Hitachi 50SBX70B 50" Rear Projection...

1 Answer

Bad picture


Try to consider the following tips:

Smearing out of one or several colors, best seen in txt-mode, my 27CE4599/30R smeared out in red and green, not in blue, fully exchanging the drivers (input and output complete, otherwise the RGB driver will blank the crt) moved the fault to the other color
Replace the 180K feedback resistors in the amplifiers with normal 1/4W metal film instead of 1/8W, they can become open circuited (in mine both green and red were faulty in this way). Change all 3 and not just the defective ones, replace also all the paralleled 75K resistors per color (fe by 47K+27K) to prevent bright color raster (they can also become open circuit)

Nov 29, 2007 | Toshiba 55H70 55" Rear Projection...

1 Answer

Hitachi 50UX57B 50 inch Rear Projection smearing...


try this

use the advanced options page and reset the factor blue and red convergence defaults then do re apply the auto color defaults color at first it seemed very red (which is good because red was the missing factor in the green picture) but after reseting all the color and tints to the normal ranges I then reset the color auto correct again and all seems fine.

Sep 18, 2007 | Hitachi 50UX57B 50" Rear Projection...

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