Question about Mitsubishi WS-55511 55" Rear Projection Television
Your symptoms sounds like a damaged or intermittent convergence IC.
There are two and very large IC’s that control the convergence in a big screen set. They are secured to a very large aluminum heat sink.
If your colors line up in the middle of the set and at the top but the picture is concave then you may have a faulty component in the pincushion circuit. When this circuit fails the picture will have an hourglass shape to it with black in the middle on the sides, or you will see square objects as hourglass shapes.
If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon and it should only add the cost of the part to the repair.
You will want to get this symptom fixed before there is a complete failure of the convergence circuit, which may take out other components.
I hope this information allows you to resolve this issue.
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Posted on Sep 06, 2009
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Posted on Jan 02, 2017
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