Question about Mitsubishi WS-55809 55" Rear Projection Television

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Mitsubish 55'' projection screen. Approx. 8 years old. Every now and again there is a color shadows. Is this fixable and if so would it be an expensive fix?

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  • Mitsubishi Master
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1.) If it is a WS-55809 it uses 2 STK-392-570 Convergence Chips--I have seen a lot of these sets where the chips become flakey or intermittent.

2.) You can buy both chips on Ebay for about 13 dollars for a pair plus shipping.

3.) IF you are able to do this repair yourself you will save a lot of money---I have start to finish step by step instructions for this set--If you want them I can email them to you--they tell you what you will need to do the repair and I also have some photos of a few things on the board you may need to look at----

4.) If you keep using the set sooner or later the problem will get worse---at some point the set could even shut off and not turn back on.

5.) If you are not able to do this repair yourself shop around---most shops TRY to charge 300-400 for this repair---I have done hundreds of them here and charge 200-250 total.

6.) Make sure whoever you get to do this repair changes BOTH convergence chips--if only one is replaced you are going to have the same problem again in a short time.

7.) Shop around and if a shop says "It has to go to the shop" keep looking----any good tech can do this repair in your home---it takes about 1 hour.

If you have any questions or need advice reply to this posting here.

I do this here for free so if this information has helped you take a minute and give me a vote here.

SD TECH

Posted on Sep 10, 2009

  • futbol323 Nov 08, 2010

    Hey SD Tech,
    I have a Mitsubishi Projection TV with a bowing blue ray line towards the top of my screen. I'm going to try and purchase these two chips as you suggested on ebay. Please send me any diagrams with repair instructions that you have. My Mitsubishi Proj Tv Model is : WS48511.
    and my email is futbol323@yahoo.com.
    Thanks,
    Futbol

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