did all thatIn st51.
Connect PIN1 of male xlr on your mic to 4th pin which is where tightening screw of the XLR is. This way you grounded the body. Make sure screw is tightened, and has good connection to the body. Connect pin1 also to ground of the pcb. Connect capsule backplate to pcb ground, don't connect it to the body. Make sure diaphragm wire is connected to the right side of coupling cap. In the past i made mistake and connected it directly to the fet. Positive lead of the capsule should go the side of the cap that is not connected to the fet.
transformer is connected like it was in the old body. didnt unsolder it.. just unsoldered the connection from the xlr and then back to it in the new body..Check if the transformer is connected right. Primary should be connected to ground and coupling cap, secondary which goes to xlr should not be grounded!
as i said im not really able to read schematics i try and it makes some sense. and from what i can read everything should be correct..Go through this schematic, it is basically the same as st51. Check if everything is where it should be. Check continuity with a multimeter.
how to i test the grounding with multimeter? where do i test it? i checked google but everything i could get was for electrical outlets..
EDIT: resoldered everything again just to be sure.. still the same.. i think i officially give up.. :/