FT-857 microphone function problems
 

Hi folks,
I switch after a couple weeks back from standard to remote MH-59
microphone on my FT-857D.
The functions on this remote mike don't work exept the red button to
switch te set on and off.No DTMF,no light.
I change in menu 59 from normal to RMT but no luck.
Otherwise the standard mike do also not every function.
Up works,but FST will put set on and off and DWN does nothing.
Very strange.A couple weeks ago it will work.
At least same and both microphones works with all functions on my FT-
897D.
Someone a sugestion?
tnx