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Blue spot on screen

I have a 52'' Mitsubishi Rear projection- there is a blue bar about 3'' tall & 18'' long at bottom left of the screen - what can it be ?

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Hi. this is called convergence failure. the convergence board is a circuit board that regulates the RGB(RED BLUE GREEN) streams that make up the color picture. If the convergence board chips are malfunctioning, you will see a distorted view of these RGB streams. This is what you are experiencing at this time.

Simply replacing the convergence board or chips will fix this issue.

Please rate and have a great day:)

Posted on May 17, 2009

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