Motorola XT420 or XT460 shouting out channel number
Does your Motorola XT420 or XT460 randomly shout out the channel number? This is repairable in many cases, unless the pads on the PCB have been damaged. If the pads have been damaged it is possible to set the radio to one channel. This means that no matter where the switch is positioned the radio will always be on one particular frequency. The channel annunciation can then be disabled. Of course this will only work if you only use one particular channel all the time, so is not a great fix.
Mike Ashby Comms will repair this fault and get your radio working as it should. I offer a fixed price repair service for most makes and models of walkie talkie two way radios. You can find details of my service by clicking here.