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The LNB is that cone thing which is attached to the dish which is inside the dome, receives the signal and sends it to software for de scramble etc, a multi switch does two things, sends voltage to drive the dish, and receives signal to send to TV, multi switch is usually fed seperate with 120 V ac then reduces to low voltage dc to send voltage up to the dish, the tuner voltage usually only operates the tuner. This is how my sea tel system works..The tuner should show if the dish is "locked" on to sat by displaying numbers like NID 100, if 00 then not locked.
If I forget to power up my multi sw. the tuner will continually hunt for signal.
Good luck...support at sea king should be able to help with de bugging...
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