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

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Yellow and blue on screen

Hitachi prohection TV, was watching it and all of a sudden two yellow sections started to appear, one at top and one about half way down in middle, the middle one started on left then crept into middle and now just two large yellow sections on screen. Will not go away. Also note that for some time there has been a blue haze also in sections and blue dots you can only see when screen goes to darker shade etc, that was not too bothersome, but the yellow has to go. LOL. I also recently replaced the lamp about 3 months ago. Blue was there before being replaced. TV is about 18-24 months old.

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I am slightly confused about the model of the television, because a 46F500 is a rear projection set that doesn't have a lamp. It has 3 picture tubes and I have a few of them in my shop right now that have the problem you reported. What we do to this set when it develops a convergence issue is to check each resistor around the convergence chips for discoloration, and replace any of them that have changed in value, along with the STK392-150 ic's. If you don't have an ohm meter and solder/desolder equiptment, you can usually get a shop to do this repair for 150.00 to 350.00. Parts will be 50.00 and labor , the rest, depending on the quality of repair shop that you use. Good luck, Russmann.

Posted on Nov 17, 2008

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