Mitsubishi WT-42313 42" Rear Projection HDTV-Ready Television Logo
Gregg Posted on Jun 11, 2012
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Mitsubishi convergence issue

I have a Mitsubishi WT-42313 (42" projection tv) with a convergence issue. I have replaced the 2 IC chips (STK394-250), checked the 3.9 ohm resistors with an ohm meter, and checked the pico fuses. So far my issue has not improved. When I checked the resistors, I did remove them from the board for accuracy, but I did not remove the pico fuses to check continuity. Do I need to remove the pico fuses, or is there another direction that I need to take? Thanks in advance, Gregg

1 Answer

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  • Mitsubishi Master 14,553 Answers
  • Posted on Jun 11, 2012
Anonymous
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Joined: Jun 01, 2008
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First is consider what the issue is: nothing moves convergence wise or only one color etc.

Also follow if needed the voltages from the pico fuses involved---one will be a negative voltage and the other a positive one--follow them from the diodes for each voltage to the chips---"Got Voltages?"

Testimonial: "I did figure out the issue and convergence issue is fixed now. Even though I checked 3 times, I still ended up finding a broken solder joint at one of the connectors on the main board. Thank you for your help. The one problem that I am having now is that I am unable to access all of the adjustment menus. I do have the original remote (set to TV) and I know it works because I can make all of the convergence adjustments using the video, adjust, and audio buttons. I just can't access all of the 0-3-5-5-7 menus."

  • Anonymous Jun 26, 2012

    I can look the hidden menu codes up but all are just 4 numbers--maybe 0357?

    If you need it the site I use should have the full service manual--with a lot of good information---has all three hidden codes for Convergence, adjustments, and Option menu.---the last can be very helpful.

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1 Related Answer

Chi Chu

  • 8457 Answers
  • Posted on Apr 02, 2010

SOURCE: Mitsubishi WT-42413 Red Convergence will not move left right

U check all the resistors with the Ohm Meter?All the resistors u check it in tolerance?Resolders all the resistors,so it make good resistance for the ICS?U do all these steps,u still have problems,Ur ICS some how it shorted it dead,again.

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Mitsubishi WT-42413 Red Convergence will not move left right

U check all the resistors with the Ohm Meter?All the resistors u check it in tolerance?Resolders all the resistors,so it make good resistance for the ICS?U do all these steps,u still have problems,Ur ICS some how it shorted it dead,again.
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Mitsubishi tv model wt-42311, error code 2-2. what can i do?

2,2 IS short protection and 95% chance it means one of the two pico fuses that protect the convergence IC chips are bad.

This model uses two of the chips: STK-392-110 and you would have to pull the light box out to replace them safely (total parts cost will be under 30 dollars).

It involves getting at the chips and the fuses and replacing them: how much skill do you have?


SD TECH
3helpful
2answers

I have a Mitsubishi WS-65711 that is six years

Go by number on your ICs If they are STK392-570 then use STK392-570 only! Call Mats for parts 10.95 each 1-800-628-1118 They are Big Black ICs mounted on Big Aluimmim heat sink will have STK on them!
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Green out-lines on tv images mitsubishi wt-42313

Iff it's more or less like a green shadow to the picture,then you have a convergence IC issue. This is 99% of the shadow problems.

Look in the back of the set for a 40-60 pin IC chip about this big
I-------------------------------------------------------I

There will be two of them with a part number on the front of them. You should replace BOTH at the same time otherwise you may have to shortly replace it again. Replace both,save yourself time and money.

If you think you can do this yourself then you will need a soldering iron and desoldering braid.
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1answer

Mitsubishi 1080 hd ws-65809 wont power up

This issue is almost always caused by a faulty Convergence IC inside your TV. These chips heat up and can become damaged over time. The most common cause I have seen for the picture distortion is the heat of the Convergence IC weakening the solder connection to the TV circuit board. If you look on various messages board you will see people rigging wooden dowels and other items to apply pressure to the chips in order to correct their picture issue. This works because when the solder joint is weakened the chip becomes loose and vibrations or pressure will cause it to work or not work correctly. Aside from all that information the correct fix is to have the IC chips replaces on your TV.

The solutions for this issue are as follows:

1. located a tv repair shop that will replace the parts for you. I had the same issue with my 65" Tv and the quote was $350 for the labor and parts.


2. You can ordered the IC replacements yourself online by going to google and looking up a reseller of the STK392-110 Convergence IC that is inside your model TV. You will need 2 of them and they cost around $6 each. If you have the soldering skills to remove the old chips and install the new ones this is by far the most cost effective route. It is a fairly simple process and guides can be found online.
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Mitsubishi WT-46809 Powers Off; Code 2-2

The 2 fuses you mentioned are associated with the convergence IC. If they are open then the convergence IC is either bad or you have a "cold" solder joint on the IC.
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Convergence on kdp-65ws550

Good Day, s_d_duncan;

The board for this 2001 Model is no longer available. Now, if you can solder, you can repair yourself. The parts you will need are two STK 392-570 (HIC), convergence IC's, part number 270P150010.

If you can't replace yourself, please call an authorized service center to give an estimate....

Good Luck, big IRISH.
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Mitsubishi tv wt-42311

convergance ic bad
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
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MItsubishi WT 46809- not staying on when turned on

One or more fuse devices open==caused by convergence IC

shorted. Solution==replace fuse(s) and STK I.C.(s).

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