Garmin SL40 won't Transmit
My Radio is a Garmin SL40.
I Flew recently and with airfield information and a radio strength 5 took off.
Changed frequency to Shawbury Zone and requested basic service.Later I wanted to change frequency to London Information.Made my request to Shawbury but only manage a dull silence in my headset, although I could hear all incoming communications.The controller asked if it was my call sign trying to transmit, and if so, ask me to press the IDENT button on my transponder.
My radio will receive at radio strength 5 but transmitting is zero.
Regarding sidetone - When I press to talk there is a split second where everything is normal then the sidetone disappears and all is quiet and dull in the headset.
On the ground I tested the two way communications with a handset transceiver and the aircraft radio.When I try to transmit from the aircraft radio the handset gives out a loud buzz.
I would be most pleased if a solution can be found.
Regards John