Fixation on facial organ as going down, currently? (8)
I believe the answer is:
earthing
'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" .)