Hi all

My 3d superwoofer is a bit ill.  The MW and LW only seems to have half the band available. 

So on MW the lower half of the band I can't pick up anything.  The first station I can get is Virgin 1215.  Nothing tunes in below that.

On LW it's worse, no radio 4.  Once I get to the top part of the band, it crackles and something almost tunes in.

I think it's an open it up and servisol job.  However I don't want to take it apart without knowing how to do it properly.  It doesn't look easy.

Can anyone help me?