I HAVE A KENWOOD TM-231A. LAST EVENING THE MEMORY DIED. I REPLACED THE 3V BATTERY AND I HAVE MEMORY AGIAN AND CAN MAKE CONTACTS JUST LIKE BEFORE, EXCEPT ANY REPEATER WITH A TONE IT WILL NOT WORK. I SET THE TONE BUT IT WILL NOT KEY IT UP. I HAVE A MACHING RADIO WICH I KEEP FOR A BACK UP . PULLED IT OUT AND IT WORKS FINE. IS THERE A RESET THAT NEEDS TO BE PREFORMED OR ANY SUGESTIONS WOULD BE GREATLY APRECIATED.