The Visionary Sound Company

Installing the Circuit Board

We still haven't reached the stage where we need to install the IC chips into the sockets so leave them in their protective foam.  We will install the chips, and connect the battery clip, once we have wired everything else up.

Before we install the circuit board we will need to prepare the center mounting post by the battery compartment in the bottom half of the case.  Take your cross head screwdriver and insert it into the hole in the post and turn it back and forth.  What we are trying to do is chamfer the end of the hole slightly so that it is easier to screw the screw in.  Now using the last bolt, try and screw it all the way into the post.  We are actually tapping a thread into this hole.  

Once this is done remove the bolt and lay the circuit board face down in the bottom half of the case so that the trimmer screw heads protrude through the two tiny holes in the case, and the hole in the circuit board lines up with the post we have just tapped.  Now screw the bolt in again to secure the board.  It doesn't have to be tight, it just has to hold it in position.  It's the piezo horn on the other part of the case that keeps the board  pressed up tight against the trimmer holes.