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ICOM IC-S700 or IC-M700 Display problems

My IC-S700 has slowly picked up a problem. I can hear on receive and transmit. Problem is now, no matter if it is A, B, or C and all from 1-16 are not showing up on the digital display. I can hear the relays inside switching but after testing today, the more I turned the selector knobs, the more displayed groups and channels that were showing  up before are no longer coming up on the display screen. Anyone know how to correct this? It will be very difficult to write down each group and channel freq then refer to it especially if we are operating mobile. My direct email addy is KV4ATV at gmail.

73's and Ty
Wolfgang KV4ATV