Today when I went to use my machine it began the Bit Zero process, moved above the silver touch button on Bit Zero and then failed, in fact it failed twice. I checked to see that a red light was on, and in fact it was. I also noticed that the silver button looked a little unusual and upon closer inspection I found it very loose. In fact I can lift it out of the socket and in doing so noticed that the end has threads on it. I attempted to push it back into the socket and turn it, both directions, hoping that it would screw into whatever it should be screwed into. No luck. I suspect that this is the problem and am wondering what the solution might be.
Not that I am not bright enough to explore the issue myself, but I hate to mess around with electronic things without first finding out it is OK to do so. With your OK I took it apart, screwed the part back on, and it is now working just fine. Thanks for you help.