Phonak Naida v90 RIC puzzling problem

My left aid usually my best ear has suddenly stopped working. I can hear the startup sound and dying battery signals easily but no voice . In fact I hear a little more with the aid out of my ear . It has been back to audiologist twice with no improvement . Anybody have any ideas?

Assuming you’re past warranty, I’d send it to Lloyds for repair.

I revisited Audiology and asked that the Mike should be rechecked. It was refreshed and aid is now working well. Thanks Wally