Issue with GPS or FC - Help needed to undestand which one

Hello ,

I got a POWER.FLAGS 8 (overcurrent) and the gps and compass went flat (health on compass 0 Nsats 0 ) . am not sure if its the GPS unit or the CAN port on the FC or the FC it self .

Is there a way i can test the the HERE3 to see if its ok ? or the CAN buss on the cube orange ?

Can someone please help with this ?

Best wishes.

Any idea why Power,Vcc? spikes and gps stops ? what could be the issue here ? cables seem fine .