Question about Mitsubishi WT-42311 42" Rear Projection Television

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Vertical red and blue lines on Mitsu WT423111 rear projection

Hi - This is the second time I've had this problem.  1st time cost me ~$400.  Basically, I've got red and blue vertical bars down the left and right side of screen.  The center is pretty clear.  From what I've read here, it sounds like a convergence problem.

I've tried to reset the convergence to factory default and also tried to adjust manually, but no luck.

I'm not a TV repairman, but pretty capable with electronical and can use a soldering iron.  Is it just a case of replacing a couple IC's or board? 

Anyone know where I can get service manuals or scematics for this model.

Thanks for any assitance.


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  • jsk175 Mar 18, 2009

    I have a Mitsubishi WT42311, The TV turned off and would not turn on. It happened before and the repair man replaced the IC's and the 5 amp Pico fuses. 4 years later it happened again. This time my friend and I replaced the IC's and the PICO fuses. Now this time the Red Convergence is way off in the top right corner and bottom left corner. I tried resetting the convergence, but they are too far out of allignment. could a bad soldier cause this?



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Convergence IC (s) are on the heat sink on the center PCB.

Part # Stk392-570 X 2 or Stk393-570

Check soldered-in pico fuses in power supply .

Use first quality parts and good soldering technique and you should be ok...T.

Posted on Oct 20, 2007


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