Crackling emitted from internals of 2017 15" MacBook Pro

My 2017 15" MacBook Pro recently began producing a crackling sound from the lower part of the case. It seems to happen when the device gets warm. Sounds consist of small pops and crackles, and they occur at completely random intervals. I thought the issue may have been related to the speakers, but upon close inspection, the sounds are coming from the internals of the device inside the lower half of the case. There have been no noticeable changes in performance. However, the sounds appear to be getting worse as time goes on. I am quite worried about the issue as my AppleCare plan just expired a little more than a month ago.