Volvo 850 starter suddenly gets no 12v on ignition level 3

Hi, after 12 days of service, my starter didn’t want to start in level 3. I then bridged the starter and could only tickle out a click. So I switched the starter.. again no luck in level 3, but by bridging the engine then jumped on. Then I measured the green-red cable … no voltage in level 3. So I changed the ignition switch…again no luck.. I have the 210 211 guard relays,but I also pulled that out for the test… W ieder no luck.. Now the question is should I look for a marten bite? Or is there also a fuse for the starter in the 850s ? LG Volvojuenger