Question about Philips 50P8341 50" Rear Projection Television

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Hitachi Rear Projection Model 500X18B V4F001550 has converge problem. Colors won't align correctly and colors are weak. Tv is not bright enough. The vertical line has a static line. How can I fix it and locate the area of repair? Also were can I buy the parts?

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  • HLFR Mar 05, 2008

    I didn't see anything burn. What color are the supply resistors.

    The board looked good. Thanks,HLF

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Most likely bad convergence integrated circuits. STK394-160 is the Hitachi upgrade components. In some cases, the supply resistors may burn as well on the convergence board, but these are easily spotted.

Posted on Mar 05, 2008

  • Paul Buscema Mar 05, 2008

    The supply resistors are small and have various colors. If a close visual inspection does not show any burned resistors, you are probably OK just changing the integrated circuits.

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Hi I currently own a Hitachi rear projection . And I was trying to tune he color and I think I burned the tube I have a line onbrhe screen. Is there a way to clean the picture tube or replace it


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1 Answer

How do I aling colors: the red and blue colors are not align making the tv look distorted.


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1 Answer

Screen is distorted on rear projection hitachi


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.

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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.

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

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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
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  • No Audio/Video - makes a chirping sound.
Example Photo:
5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
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  • Halos around objects
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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

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