Question about Hitachi 46F500 46" Rear Projection HDTV-Ready Television

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Hitachi 46f500 screen messed up after welding on same circuit

I have the 46F500 Hitachi Projection TV. The set has blue sagging down from the left side of screen and also has blue shadows. I removed the back cover to see if anything noticeable stood out. Wow was it dirty? I cleaned it out and noticed that on top of the red lense there is a piece of narrow tape stuck to it. Should it be there? After cleaning no change in picture. I also tried to do manual convergence and the blue lines will not line up on the left side of the screen. Running magic focus in AUTO it would hang up on the blue and end showing a number "5". Any ideas what is wrong? The trouble started after welding on the same circuit. Coincidence?

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  • Anonymous Sep 08, 2008

    Same problem but no welding or other activity to trigger it. It just started.
    Any diagrams, plans or links toparts might help... Thanks!


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If you did manual conv. You have to redo it when you replace the bad parts. Them being conv. ic's replace them and check 1/4 watt resistors that are low value right beneath amps. Careful not to solder any foil pads together or you will have major problems. Very common for do-it-yourselfers. Good luck, Russmann.

Posted on Sep 02, 2008

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