2007 Mazda 6 radio comes on sometimes for an hour or so and then shuts off
 

2007 Mazda 6 The radio comes on sometimes for an hour or so and then shuts off along with the information display above it.. This will happen abruptly or it may shut down for a few seconds and HELLO comes back on and that will occur for a while until the display shuts down and the radio stays off with the display. Sometimes the radio will come on when I start the car sometimes it will be off for several day and then come on while driving.. Does the information display control the radios supply of power? Can I replace display in it with one from a car auto recycling yard? Does it have to be programmed?
Thanks in advance for your help.
Ktmc59