I bought one a week or two ago, only to find that it would intermittently cut out…
I discovered that If I “tap”, or lightly strike the keyboard in certain ways, it would start working again… If I wiggled the battery compartment cover, it would work again, so I concluded that it was a loose connection somewhere. Tried tin foil down in the battery compartment (in the negative side)….But it was really hard to cram the batteries back in….and it still cuts out. I’ll keep tinkering.