right after inserting a new battery had to calibrate the compass and got an error massage concernning magnetic field... could not calibrate...
please, any advice ?

You have to do it in the opened space with no magnetic interference. Try to change the location.

Is there any way to purchase the compass chip for my light bridge on my inspire 1.

bigwillzone Posted at 2016-4-25 09:27
Is there any way to purchase the compass chip for my light bridge on my inspire 1.

compass for the lightbridge?  Sorry, I don't think I understand you correctly...
Did you try to do the calibration in the other spot?
Also please try to do the IMU calibration