Hello, Recently a tube in my amp must have gotten fried so I found a guy who could fix it for me, but he needs the schematics to make his life easier. However I can not find the schematics anywhere. I did find the schematics for most other ENGL amps, http://el34world.com/charts/Schematics/files/engl/Engl_Schematics.htm . Maybe the gigmaster 30 head is similar to one of these but I cant wrap my head around it. Any help would be much appreciated, thanks.