Question about InFocus LP70+ Multimedia Projector
What kind of blue lines ? vertical, horizontal or what. If they are uniform and pulsating, you can try to reseat the engine to the main board. I would clean the connection before reseating it with an approved board cleaner. if that don't work, it is either the engines board or the main board. Hard to tell without a test fixture.
Posted on May 11, 2010
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Posted on Jan 02, 2017
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your problem is in blue video output circuit.
as you are seeing lines with blue color
those lines are called retrace lines.
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