Hi, Im needing a schematic to repair a 2band preamp that belongs to a 79 stingray(what I was told yet to verify). I really would like to put this bass back to original, its in bad shape now. The preamp is there, but I dont think I can send it in for trade because someone tried to either repair it or mod it and they really botched it up big time. Long story short its missing several of resistors and at least a couple of capacitors. Also the wirings a little hacked up. It has the 4250cn chip on it (probably needs replaced too) and no epoxy so I assume it is the correct one for this bass. I can fix it no problem because since its a fairly simple circuit I just dont know the ohm and uf values of the missing parts. Any help is appreciated! 
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