My mc220r will not comunicate

I believe there is a real issue with this radio, I can’t get is to comunicate with other radios
When i first got the radio it would come on and you could hear every this fine but could not talk to them, I never timed it but after about 5 minutes or so it would start working fine, now no matter how lond i wait it still does not work and of course now I can’t hear the other radios either, or talk to them