Hi..i am new user here. As per my knowledge either the 324 is dead or the 100uF cap coming off pin 8 has gone bad and become a short.So give the cap a test for continuity and then i’d swap out the 324 if that’s not the case. You could also check for continuity between the 324 pins and the PCB, the traces on the old EHX boards do have a habit of breaking.

turnkey pcb