Barco 500/800/801  

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AC input board

The AC input board contains the 110/220 volt jumper. Whichever side is facing up when the board is installed is the voltage the set is preset to. The main AC input fuses are also on this board. Once in a while these fuses will blow for no reason, and once in a blue moon one of the fuse holders will develop a bad contact with the fuse, and will blow multiple fuses. If this occurs, check the fuse holder clips for discoloration, and if one side is darker than the other, the board will need replacing.