Crossword Genius

Fixation on facial organ as going down, currently? (8)

Ross

I believe the answer is:

earthing

I'm a little stuck... Click here to teach me more about this clue!

'fixation' is the definition.
(fixing to the earth for electrical purposes)

'facial organ as going down currently?' is the wordplay.
I cannot quite see how this works, but
'organ' could be 'ear' (ear is a kind of organ) and 'ear' is located in the answer.
The remaining letters 'thing' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

'on' is the link.

Can you help me to learn more?

(Other definitions for earthing that I've seen before include "Electrician's work" , "Going to ground" .)

I've seen this clue in The Guardian.
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