I have the FP5 receiver. It works fine, except when I connect it to an input that has phantom power activated. Then the FP5 audio gets noisy. Turn off the phantom power and the FP5 is OK again. Is this a known issue? Is there a work-around?
This is a known issue and there is a fix for it. Please send the FP5 to the Shure Service Center in your country, and they will be able to perform a modification to the circuit board to fix this issue.