Question about Mitsubishi WT-46809 46" Rear Projection Television

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Picture problem When tv is first turned on the three colors are seperated causing a concave effect and can last up to a hour then it straighten out. Is there something I can do or is repair called for?

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  • LarryD Nov 27, 2007

    I am also seeing this concave effect with a "normal" picture in the center and a curved "rainbow" effect on the top and bottom of the screen. Using the menu to adjust the red and blue convergence doesn't help.

    The problem appears "randomly" (esp. when turning on the set) but goes away after a few minutes.

  • Anonymous Nov 29, 2007

    i've been having the same issue for over a year. recently though it may stay that way all day. it went weeks doing it and then some days it will be normal. i'd say it's screwed up 80 to 90% of the time now though. i've called a authorized Mitsubishi repair site and they say probably the covergence and cost anywhere from $200 to $400 to fix if i bring it in

  • tburg05 Dec 04, 2007

    I have the same problem but it never goes away. It used to be intermittant, butnow it's constant.

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Convergence circuit repair = replace STK392-570 IC's....
Located on center circuit board on heat sinks................T.

Please rate this solution............

Posted on Nov 13, 2007

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2 Answers

I have a HCL473W with a 'concave' screen effect on 2 colors??


You don't need to replace the whole board, regardless of which board it may be mounted on. The STK IC convergence chips alone are all that need to be replaced. You can order them from a number of different online sites. You can try Alibaba.com. If you have any more questions, feel free to ask!

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Turns off after 30 seconds


i think the convergence amps are weak, or the akb circut has caused the tubes to go bad, google your model number to see if it is in the tube problem. sony made some projos w/ bad tubes in them. tv lasts only three or four years,no cause i had one

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RCA-picture discolors, goes concaved


Sounds like a capacitor in the power supply is beginning to fail.Unless your good at this type of repair, I would call a tech to have it serviced. And I would also not use the set until the problem is corrected, or it could get real expensive to fix.

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You most likely need a new convergence power supply board if fl231 keeps blowing thats the most likely cause, also check for shorthed capacitor cp231. If you need a link to get a replacement convergence power supply board, let me know I know where you can get them.

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thats usually a convergence IC failure, Are you able to move the red and blue colors in the convergence adjustment menu?

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1 Answer

My RCA Tv has a concave picture!!!


Convergence problems. FIrst try going into customer setup and seeing if convergence options are there and if adjustments can be made. unfortunately when the picture is bowed like that it idicates a complete loss of convergence which idicates one of three boards have gone bad.

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Mitsubishi projection tv


I have a similar problem. I have tried to fix the convergence via the remote and that has not helped. My three colors are separated and the edge of the picture is bent in toward the center. I am going to try a hard reset but i suspect the convergence IC are fried. Since the set is not HD, I will probably replace it if the hard reset does not work.

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Rear projection set


Convergence circuit repair = replace STK392-570 IC's........
Located on center circuit board on large heat sinks........T.

Please rate this solution...................

Nov 07, 2007 | Mitsubishi WT-46809 46" Rear Projection...

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