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If the vertical line is always in the same place and affects all input types then it may be caused by a problem with the DLP chip or a loose connection.
First, check that all cable connections are securely attached. Remove each one and re-attach to ensure they are firmly and securely connected.
If that doesn't help, then the DLP chip will need to be investigated.
Hi, just checking in on your question. How did things work out for you?