Why is my MacBook Pro making a clicking, snapping noise?

Hello all,

Intermittently, this 13” 2016 MBP (Touch Bar) produces a sharp clicking sound, a metallic snap. It is not coming from the speakers, which are turned off; neither is it from the keyboard or touchpad.

Have noticed this most often (though not exclusively) while working in Final Cut Pro X. Seems to occur when the MBP is under load, such as during multi-layer compositing. It also happens, occasionally, after awakening the system.

The MBP was sent to Apple for diagnosis/repair. When it was returned, the Product Repair Summary did not indicate that any parts were replaced; it did state, however, that “…your diagnosed and repaired product now passes all hardware testing.” But upon powering up the unit, and opening a Finder window, we immediately heard the familiar metallic snap. Ugh, as we say.

Could this be a thermal issue, a piece of metal rapidly expanding from increased heat?

Is there a way to determine the cause and implement a fix?

Am frustrated that Apple did not to provide more diagnostic detail. I had spent a great deal of time sharing the specifics of the problem, even sending them a video of the clicking and snapping as it occurred during a recent edit session.

Looking forward to and appreciative of your feedback,

JLS