Question about Philips Magnavox 51MP392H Rear Projection Television

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Toshiba 42" cinema series hd r-proj ghosting, tch foc error

I have what basically amounts to a convergance issue. The picture is doubling, splitting or ghosting, though not evenly across the colour spectrum. It is worst on the green tube, blue is next, and the red id nearly normal. ocassionally the picture will pull itself straight, and looks great, though it usually only lasts for a minute or so before going back to it's scattered self. the picture always pulls middle hieghth wise off to the right. i am technically quite comfortable soldering on computer boards, so any advice on what common failures and repair instructions would be great! thanks!

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  • caferacer59 Apr 22, 2009

    If the "recalibration" is what I need to do, how about instructions or a manual or details of why? I am a computer repair tech, so I am ok soldering circuits etc. so tech details are better. Thanks.

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  • Philips Master
  • 3,866 Answers

Recalibration is what is needed, you're going to need to recalibrate the 'GUNS's if you do not know how to do it yourself I would recommend you calling a support tech.

Posted on Apr 22, 2009

  • Grand Canyon Tech
    Grand Canyon Tech Apr 22, 2009

    Thanks for such a low rating

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1 Answer

The picture is "ghosting" or doubled


The tv have a problems known as a convergence problems,it dead.The tv have colors lines R,G,B mis alignment,have colors shadows pictures or 3D pictures look alike.The tv convergence board have dead 2 STK convergence ICS and some or all it resistors too.These parts on the tv convergence board,must be replaced to solved the tv picture convergence problems.The shop,will cost like $300-350 for parts and labors.

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1 Answer

My Toshiba cinema series HD separates the red & blue color.


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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 a convergenece repair kit with instructions from the links 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
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*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
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*Red/Orange looking picture

You can see some more examples and find a fix herebb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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1 Answer

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If the picture looks like a 3D one, the problem is a convergence issue. This can be as simple as poor connections at the pins of the convergence ICs or defective ICs. If you can solder you can probably fix this yourself. Please note that there are potentially dangerous high voltages inside the set even when unplugged.

If you wish to attempt the repair, please update this and I will provide additional details and instructions.

Dan

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There are many circuit failures that can cause the TV to do this. By far the most common issue is a failure of the convergence output ICs. Expect to spend $350-450 to fix this.

michtech

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1 Answer

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I charge 285.00 at my shop ,so if you cannot fix it your self you are looking at repair anywhere from that price or more .You have 2 STK ics these are your convergence Chips .You would need to replace both of them.If you can solder you have it made.

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1 Answer

Toshiba cinema series convergence problem


If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/ Convergence adjustment procedure to many brands of projection TVs are given in detail.

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Toshiba 43H70 Picture Problem


Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
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http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

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1 Answer

Toshiba Model # 42H81 Picture Problem


Can you describe the issue a little more? It may be a convergence issue which is quite common on big screens. But there are quite a few issues that can cause a bad picture.

If it's convergence, you'll be able to tell by going to a news channel and looking at the text. If the convergence is bad you'll see a ghosting like image of 2 or 3 letters for each one that should be there.

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1 Answer

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