Where Can I Find Schematics and The Latest Valve Junior Where Can I Find Schematics and The Latest Valve Junior mods. Epiphone Schematics for Valve Special/Valve Standard TMB Conversion(archived from 18watt) and Epi Valve Std Mods from 18watt (active) Threads and Schematics, and Blues Custom 30 schematic Valve Special Valve Standard Blues Custom 30 schematic. BlackHeart Schematics Little Giant Valve Junior V3 Schematic - Epiphone Amps & Accessories Mar 09, 2013Hello all, new to the list and was hoping to find an original/factory schematic to the Valve Junior V3 Head. Thanks for your help. Jump to content. main. Epiphone Amps & Accessories ; Valve Junior V3 Schematic Sign in to follow this . Followers 0. Valve Junior V3 Schematic.