Question about Mitsubishi WS-55819 55" Rear Projection Television

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I have a mitsubishi WS55819 and every time i turn it on the top and bottom center colapse and the picture is distorted but if i hit the tv it pops back to normal however the problem is starting to get worse what can i do

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  • Mitsubishi Master
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I suspect what you are describing is a convergence problem---when it acts up go into the customer menu and select convergence--then advanced--it will bring up a grid of lines---if red, or blue is skewed this is your problem.

I have repaired hundreds of these sets--this model uses two of the STK-392-570 convergence chips and I have seen many where the convergence comes and goes--what happens in these sets is not a soldering problem but the pins inside the chips come loose--Each chip has about 16 pins--I have had ones that when I removed the solder pins fell out of the chip.

The pair of chips can be bought on Ebay for about 12 dollars plus shipping (I know the best seller there) and if you or someone you know can do it you can save the set and a lot of money.

Most shops are going to charge at LEAST 300 for this repair--and some will not do it in your home--it can be easily done in the home and takes about 1 hour.

I HAVE START TO FINISH, STEP BY STEP INSTRUCTIONS FOR THIS REPAIR IN THIS MODEL.

If you think you can do it yourself let me know and we will get the instructions to you.

If you have any questions or need help--let me know by replying to this solution. I am here to help people.

If this information has helped you, rate this solution as I do this for FREE.

Thanks for using FIXYA!

SD TECH

Posted on Nov 20, 2009

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  • Master
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Your tv has three piture tub guns in there. Your convergence board that controlls them to be in align is acting up.

Posted on Nov 20, 2009

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The picture projects the image with concave lines on the edges. I'll explain further: somehow the picture is distorted in a way that bends the four edges of the picture in a curved-concave manner so that...


Projection sets have two very common problems.

The first common problem is 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.

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Problem #2 - Another common problem is dull or washed out video.

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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

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Your reference to concave picture suggests a high voltage problem and not convergence. If the raster can't scan from left to right , top to bottom, your having High voltage trouble. if your colors are not dropping on top of each other that is convergence. I would suggest it may be time to consider a purchase of the new HD set for the cost of this repair. good luck

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Their is no more you can do.
Seen this before.

You need a professional.
Stop using the TV until it is repaired.
Continue to use the TV and your problems WILL multiply.

Call the manufacturer to find you nearest authorized service center.

MR. TV Sales & Service Inc
Milwaukee, Wisconsin 53405
(414) 762-8600
Established 1974

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