Question about Panasonic PT-51HX40 51" Rear Projection Television

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Panasonic pt51hx40b the picture at the bottom about 8 inches up and it goes to the middle of the screen.it is like the convergence is off.it is like 3d you see lite green and pink.the top right hand corner bit not quite as bad only about 4 inches.any help would be appreciated. Thanks Spaceace

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  • Anonymous Nov 03, 2007

    the bottom picture or text were not align and at the upper rigth of the tv is not align too.you think convergence ic is bad too?

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If the bottom 8 inches of the screen is black then you likely have a failed part in the vertical output circuits. If you can still see video clear to the bottom, then your convergence IC's (IC7001 and 7002) may have taken a dump on you. Worst case would be a failure in one or more of the 3 yokes in the set that attach to the CRT's. If the sets less than 10 years old, it may be worth repairing. Otherwise, a nice NEW HDTV would be in order.

Posted on Jan 03, 2007

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Posted on Jan 02, 2017

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Problem #1) Convergence

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  • Video may look distorted
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You can see some examples and find a fix here...

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

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This is a very common failure on Projection sets. Its called a convergence problem.
You may have one or more of the following symptoms.
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Colors don't line up
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1 Answer

Picture is bending at the top and bottom and looks 3d


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...

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Yours may have one or more of the following symptoms
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Problem #2

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1 Answer

Wave at bottom of screen with green and pink shadows


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This is a very common failure on these projection sets and a fairly simple DIY fix. All projeciton 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....
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  • 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.

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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. 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 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 are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

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2 Answers

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When there is a convergence issue,the first step is change both
IC's for reliability. Then check for open fuses devices,usually
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