I got the same probs with my infocus when connected to laptop but its perfect pict if i used av cables so i dont think its the bulb maybe something more.... Still digging for a solutions up to now.
arnesalex
July 2012
Is it in the top corner? Ive got a blue line and a yellow smudge on mine, I think it could be the mirror.
Sonya
September 2011
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