hello my name is kathy and i just had the same problem with mine.I know if you don"t use it very often and shut it off a lot you will loose the program. I first
stoped turning it off at all and would just turn the sound all the way down. I went to each one and unlocked them, I had lost over half and the other was
locked. I put them back in unlocked the ones the were locked,
stoped turning it off 2 years ago and have not had a problem since. I hope you will let me know if this helped.
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explain the locking it has on it ?
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