What do you have set for voltage on the dm800 on tuner set up put more voltage to the lnb see if it makes a difference via tuner set up then test all boxes connected.
it may give the lnb a boost. my dm800 always has a small voltage going through it.
its always something very simple don't over think the problem.
it may give the lnb a boost. my dm800 always has a small voltage going through it.
its always something very simple don't over think the problem.

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