api 512 schematic needed

[pucho812]

anyone got? there is  here that  the mic input works but the 1/4 input does not.

 

[gridcurrent]

the original 512 has no 1/4" input.
are you referring to one of Brent's creations ?

 

[pucho812]

Not sure,  was contacted by a studio  and they said their API 512, 1/4 input is not working, they might be referring to  a 512 C, they also mentioned of a 1272 output pot needing replacement and I don't have that value ahead of time either