Spider IV 75W looses preset memory

[Backhoe 0]

Need some help with a Spider IV 75W , that looses preset memory every time it is switched to another and then return.  EX. channel 1, you set all the knobs, hold the channel 1 button in till they all start flashing, let up and push channel one again. All is good, the other lights go out, then go to one of the other channels, then back to channel 1 and your saved settings are gone. Anyone have or had the similar problem and know what is wrong?

[fflbrgst 1,852]

Doesn't sound promising.  At this point, I would suggest you do a factory reset (hold the 'A' button in while powering up), and see if that corrects anything.  Note that you will lose any saved presets when you do this.  If the factory reset doesn't work, you'll need to bring it to a factory authorized service center for evaluation.  It might not be worth the cost of repair at this point, being an older amp.

[Backhoe 0]

Thanks fflbrgst, I will pass this on to him and see what he wants to do.

[Backhoe 0]

Thanks fflbrgst,   He did what you said and it works perfect now.   Really appreciate the advice, and Merry Christmas to you.....