Question about Hitachi 43FWX20B 43" Rear Projection Television

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Red color alignment problem

Overnight this problem appeared. All shapes on the right hand side of the screen have a red shadow to the right and figures on the left hand side of the screen have a red shadow to their left. As the news ticker goes across the bottom of the screen a red copy of all letters appears to curve outwards from the background into the screen and follow the letters, gradually matching up and aligning properly in the middle of the screen, then the red copy letters gradually seem to fall back from the screen and curve back into the depths as if the red were on a circular screen that exists behind the real screen. What repair will this need. I know this is confusing, but the problem does not exist in the middle of the screen, just on the outer 1/3s of the screen. What controls and aligns the red in this thing? Any thoughts and help will be greatly appreciated. Bob W.

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  • Bob W Nov 16, 2007

    This reply has misspellings and poor syntax and grammar. While this person may know something about TVs, this info is of no good to me and I do not accept this response in trade for my 10 bucks. Please have someone respond who can write decent English. I was able to correct the red lines after about 2 hours of work with the covergence controls in the remote. The picture was beautiful for 24 hours, then suddenly went back out of whack. Is there a way to lock the convergence after you orrect it?

  • Bob W Nov 16, 2007

    I was able to correct a massive red line convergence problem after 3 hours of tedious labor, and the picture looked beautiful for 24hrs, but suddenly went back out of whack. Can one lock the lines after they have been fixed? If I look at the innards of this thing what do I look for, and is this problem better left to pros? I have little experience with solid state boards. Thanks. Bob W.



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1) Whenever a rear projection TV has convergence issues, the
fix involves replacement of both IC's = STK392-110.......sub to
STK394-160E for improved durability...........
2) Soldering only is a temporary "fix" at best
3) Do not allow generic IC's, OEM quality or better = I use
Hitachi brand,made by Sanyo,with no callbacks....
4) Skill level needed = above average,....needs chassis pull...T.

Posted on Nov 16, 2007

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All you have to do for you to fix this is solder bad solder connections on convergance board if the problem does not go away the replace the stkyou might have more than one replace them all

Posted on Nov 15, 2007


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