Hi @edgewood ,

If the GFI trips mid brew there may be a problem with the heater element in the machine, going low resistance (shorting out) to the earth connection (chassis perhaps) in the machine as it heats up or another component that is “live” during the brew cycle, maybe the thermostat, touching earth.

The machine will need to be opened and the heater circuit tested to verify this.

Here’s a link to the ifixit Jura (Capresso) Impressa J repair guides.

Here’s a link to the Jura 5 parts diagram which may also be of some help.

This link may also be of some help