Question about Hitachi 43UWX10B 43" Rear Projection Television

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Convergance The preceeding post was discovered posted in the wrong place and with some alteration was posted again. My apologies. However, further examination of the IC's, found most of the pins soldered connections to be broken. We resoldered all of the pins. The results were red and green were adjustable manually, magic chef still does not work. The blue gun, however, is still extremely distorted and unadjustable. The system recognizes the grid lines. You can select each grid line, vertically and horizontally but you can't move them. At this point, we are waiting for the new IC's. Should we possibly be looking for trouble elsewhere as well?

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  • Bill Hurst
    Bill Hurst Aug 14, 2007

    Thanks, DonLfixit, for the suggestions,I will follow through on your recommendations...



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I would check every resistor in the circuit associated with those IC's. They may not be shorted or open but changed in value. Also check the electrolytic's, on many occations I just replaced them to be safe, especialy any of low value such as 4.7uf 0.47uf 2.2uf 0.22uf 1uf, and so on. Cant hurt to check diodes too! Hope this helps!

Posted on Aug 14, 2007


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