Motorola Maxtrac No Recieve Problems

Hi Have a motorola maxtrac 136-174 mhz vhf and the problem is it Transmits fine but will not recieve on any channel Anyone have any idea why it would do this. I have reprogrammed it and as far as i can see all settings are correct
Thanks for your time

I think it fairly certain it has to be a programming error, if it worked before on TX and RX.