Question about Mitsubishi WS-55819 55" Rear Projection Television

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Hitachi 51 hourglass shape picture

I had a mark on the screen of my 46 hitachi ultravision projection tv, someone gave away a 51 inch hitachi ultravision. I thought I wold just replace the screen, but i decided to keep the bigger tv, and switched the main circuit board. The only problem is an hourglass shape, that I didn't have on the other tv. Was this caused by the switching? If I put the board back in the old tv, would I still get the same problem in the old tv? What can i do to fix it. I have another board, if there are parts that I could try to use. Thanks

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  • brussel Dec 31, 2007

    Could I get that part off the other board? nad what does it look like?

  • brussel Dec 31, 2007

    Can I get this horizontal switch off the oother board I have and switch them?

  • brussel Dec 31, 2007

    Ok, I changed the mother board. The mother board doesn't give this problem on the other tv. I also changed the small circuit boards that are attached to the bottom of the 3 lenses also. Still no result. Is the problem in the lens itself? Could there be an adjustment?



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Horizontal circuit is not working

Posted on Dec 31, 2007

  • cyriacus joseph Dec 31, 2007

    you need professional could be a number of things in the horizonta circuit e.g yoke .transistor ,transformer ,diode etc..



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