@jordanellery , Jordan, Minolta QTsi Maxxum shuts down when I am taking photos, try different battery, ensure batteries are healthy and charged check in your cameras settings or if timer is set, to see if camera is in power save mode. Link below is a manual for your camera. Good luck.
I hope this helped you out, if so let me know by pressing the helpful button.
http://www.tashimareport.info/Minolta/si-Serie/QTsi/UserManual/UM-QTsi.pdf