Hi and thanks for your reply.
Yes I have switched the sound on and off with record sound via cache.
I’ve reset controller and cleared cache .
Either the mic built into the screen is faulty .
I haven’t found a way to test it
There doesn’t appear to be a setting in the settings to see the mic.
Strange.
It’s not a big deal just thought it could be a another setting some where.
I could try the DJI online help desk.???