Hi new to this 1st model.i have a problem with the mfu-03 unit in that it does not appear to switch on (red led does not light on switch on ), ive checked all connections,battery fully charged, power appears to be there because when I switch on the speaker it gives a faint cough but no response elsewhere.it did initially work (apart from lights via tx.) but I pressed the switch to reset the unit ,since then no go. I’ve tried to configure using set up procedure but no luck.any pointers to the cure please
