Question about Sony KP-57HW40 57" Rear Projection Television

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Mitsubishi ws55809 converge controls not working red lines are all bowed at each side

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  • s_eubanks Apr 03, 2008

    How do you replace the convergence ic and were can you purchase them

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Replace both convergence IC's STK392-570 located on
center circuit board on large heatsink.....................T.

Posted on Dec 04, 2007

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The screen has bowed lines and different colors no sound


If the model as indicate here (WS-55807) YOU may have two problems: Convergence and a audio problem.

In customer menu select convergence and with the Mitsubishi remote try to adjust the grid of lines so no red etc--if bowed it will not adjust.

This would mean the two stk-392-570 convergence chips this model uses need to be replaced(I have free start to finish instructions for that).

The no sound may and is likely a second issue: speakers in the menu may be switched off etc.

If both happened at the same instant this model has a hard reset(not from front of set but with a 4 digit code and done with the Mitsubishi remote) This sets everything except convergence adjustments back to factory original.

It is called the OPTION menu.

So, did both issues happen at exact same time or what?

Parts for the convergence repair are under 30 dollars total and I can tell you where.

Questions?

Mar 28, 2012 | Mitsubishi WS-55807 TV

1 Answer

I have a Mitsubishi WS55809 that I purchased in 2002, and my kids have been using it for gaming. As they are playing, the screen convergence will change constantly from a normal image, to a "bow...


Unless you've moved the unit lately, or the kids have treated it roughly, it's probably not the mirror, which is fixed in place with screws on this model.
You can also take a look at this website here, which describes some solutions to bowing problems, specifically replacing the convergence ICs. However, this is expensive, provided you can still find parts, and probably isn't your problem, anyway.
Since whacking the unit fixes and un-fixes the problem, it's more than likely a connector that's loose. If you know your way around the inside of a TV, you can unplug, clean, and re-plug the various boards and connectors, especially the convergence and deflector boards. That will likely solve your problem
CAUTION: If you don't know your way around the inside of a TV, DON'T OPEN IT! Even after unplugging the TV, some of the wires inside will have enough voltage to cause serious injury. Better to be safe than sorry.

Feb 28, 2011 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

The picture is showing a double image and is distored.


The problem you are refering to is more than likely a convergence problem. The convergence circuit in your tv is controlled by an IC (integrated circuit) stk392-110 and it makes the 3 colors (red, blue, green) line up/converge together to create a clear picture. You'll know when this part needs to be replaced because the picture you see is 3d looking and possibly bowed on the top or bottom or on the sides in any or all 3 colors.

Jan 24, 2010 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Ws55809 tv picture bows at top and bottom. Also has shadows. Is it the bulb and where do I get one.


You have a convergence problem. The 3 picture tubes are fine. The small signal module needs reworked. The board with all the rca jacks.

Nov 29, 2009 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Mitsubishi Convergence issue


If the screen is out of focus you probably need to adjust the focus on the focus block it is usually located behind the front grill, there are 6 adjustment screws on this block, leave the screen controls along just adjust the red, green, and blue focus screws. When converging a set everything is converged to the green, the blue and red are suppose to come to the green.

Sep 02, 2009 | Mitsubishi WS-65311 65" Rear Projection...

1 Answer

My Mitsubishi vs-5061 isn't working properly. The red crosshair wont line up with the white ones going horizontally. The red is bowing. Causing most writting to have a double vision look. HELP!


Hi, this will occur when the convergence unit has failed . you will need to replace the convergence board in this unit in order to restore proper convergence functions. This is just below the optical assembly in the PCB main area next to the signal board and terminal block.

Jul 26, 2009 | Mitsubishi VS-50611 50" Rear Projection...

1 Answer

Mitsubishi ws55809 TV


recommend you ask slinteriors http://www.fixya.com/users/slinteriors

Aug 28, 2008 | Televison & Video

1 Answer

Mitsubishi vs 5071


Usually this problem is caused by bad convergence ic's. These hold the three colors in alignment. They are better to be replaced as a set of two or three chips and must be soldered/desoldered into the circuit board. Most shops charge 200.00-375.00 to do this repair. I hope this helps. Most bow problems are from convergence or pincushion circuits.

May 21, 2008 | Televison & Video

1 Answer

Mitsubishi Vs-6047 Convergence Problem...Please Help!


usally convergence green is split between 2 ics. so if your blue and red are still good. it might be the green output resistors. The

Jan 08, 2008 | Mitsubishi VS-6047 60" Rear Projection...

1 Answer

Mitsubishi WS55809 "red" converge problem


Proper description is convergence IC ...part # STK392-570...
there are two in model # WS 55809...replace both.......T.

Jul 30, 2007 | Mitsubishi WS-55809 55" Rear Projection...

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