How to fix white verical lines on Mitsubishi EX200U DLP projector

I have white vertical lines on display no matter if it is connected to computer or not. I know it can not be connection issue due to the fact it has the white vertical lines whether its connected to a computer or just plugged in.

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I have black vertical lines too and when i was changing the vga cable thru port 1 and 2 they became white then they got back to black. sometimes they disappear. i think its a bad connection somewhere on the video board


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