Batboard

HELLO TO EVERYONE I HAVE A VHF 16 CH GM300 THAT WORKS FINE FOR A WHILE THEN IT WILL NOT RECEIVE, WELL IT RECEIVES BUT THERE IS NO AUDIO, IT TRANSMITS FINE. I KNOW THE RADIO WILL KEEP THE CHANNEL WHEN IT IS TURNED OFF, NOW WHEN I TURN THE RADIO ON IT TURNS ON CHANNEL 1, SOMETIMES OPENING THE MONITOR WILL SOLVE THE PROBLEM BUT SOMETIMES THIS WILL NOT WORK. IS THE VOLUME CONTROL BAD?, HOW CAN I SOLVE THIS PROBLEM.
THANKS FOR READING.